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提交 3e8d6ad9 编写于 作者: L Linus Torvalds
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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (25 commits)
  ACPI: Kconfig: ACPI_SRAT depends on ACPI
  ACPI: drivers/acpi/scan.c: make acpi_bus_type static
  ACPI: fixup memhotplug debug message
  ACPI: ACPICA 20060623
  ACPI: C-States: only demote on current bus mastering activity
  ACPI: C-States: bm_activity improvements
  ACPI: C-States: accounting of sleep states
  ACPI: additional blacklist entry for ThinkPad R40e
  ACPI: restore comment justifying 'extra' P_LVLx access
  ACPI: fix battery on HP NX6125
  ACPIPHP: prevent duplicate slot numbers when no _SUN
  ACPI: static-ize handle_hotplug_event_func()
  ACPIPHP: use ACPI dock driver
  ACPI: dock driver
  KEVENT: add new uevent for dock
  ACPI: asus_acpi_init: propagate correct return value
  [ACPI] Print error message if remove/install notify handler fails
  ACPI: delete tracing macros from drivers/acpi/*.c
  ACPI: HW P-state coordination support
  ACPI: un-export ACPI_ERROR() -- use printk(KERN_ERR...)
  ...
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Showing with 2640 addition and 2645 deletion
arch/i386/Kconfig
浏览文件 @ 3e8d6ad9
......@@ -176,7 +176,7 @@ endchoice
config ACPI_SRAT
bool
default y
depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
depends on ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH)
select ACPI_NUMA
config HAVE_ARCH_PARSE_SRAT
......
arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
浏览文件 @ 3e8d6ad9
......@@ -418,8 +418,14 @@ acpi_cpufreq_cpu_init (
goto err_free;
perf = data->acpi_data;
policy->cpus = perf->shared_cpu_map;
policy->shared_type = perf->shared_type;
/*
* Will let policy->cpus know about dependency only when software
* coordination is required.
*/
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
policy->cpus = perf->shared_cpu_map;
if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
......
arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
浏览文件 @ 3e8d6ad9
......@@ -399,8 +399,14 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
dprintk(PFX "obtaining ACPI data failed\n");
return -EIO;
}
policy->cpus = p->shared_cpu_map;
policy->shared_type = p->shared_type;
/*
* Will let policy->cpus know about dependency only when software
* coordination is required.
*/
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
policy->cpus = p->shared_cpu_map;
/* verify the acpi_data */
if (p->state_count <= 1) {
......
drivers/acpi/Kconfig
浏览文件 @ 3e8d6ad9
......@@ -133,6 +133,13 @@ config ACPI_FAN
This driver adds support for ACPI fan devices, allowing user-mode
applications to perform basic fan control (on, off, status).
config ACPI_DOCK
tristate "Dock"
depends on !ACPI_IBM_DOCK
default y
help
This driver adds support for ACPI controlled docking stations
config ACPI_PROCESSOR
tristate "Processor"
default y
......
drivers/acpi/Makefile
浏览文件 @ 3e8d6ad9
......@@ -42,6 +42,7 @@ obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_BUTTON) += button.o
obj-$(CONFIG_ACPI_EC) += ec.o
obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_DOCK) += dock.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
obj-$(CONFIG_ACPI_HOTKEY) += hotkey.o
obj-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
......
drivers/acpi/ac.c
浏览文件 @ 3e8d6ad9
......@@ -84,20 +84,18 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_ac_get_state");
if (!ac)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error reading AC Adapter state\n"));
ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));
ac->state = ACPI_AC_STATUS_UNKNOWN;
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -110,14 +108,13 @@ static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_ac *ac = (struct acpi_ac *)seq->private;
ACPI_FUNCTION_TRACE("acpi_ac_seq_show");
if (!ac)
return_VALUE(0);
return 0;
if (acpi_ac_get_state(ac)) {
seq_puts(seq, "ERROR: Unable to read AC Adapter state\n");
return_VALUE(0);
return 0;
}
seq_puts(seq, "state: ");
......@@ -133,7 +130,7 @@ static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
break;
}
return_VALUE(0);
return 0;
}
static int acpi_ac_open_fs(struct inode *inode, struct file *file)
......@@ -145,13 +142,12 @@ static int acpi_ac_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ac_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
......@@ -159,21 +155,18 @@ static int acpi_ac_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_AC_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_AC_FILE_STATE));
return -ENODEV;
else {
entry->proc_fops = &acpi_ac_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_ac_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_ac_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device));
......@@ -182,7 +175,7 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -194,13 +187,12 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
struct acpi_ac *ac = (struct acpi_ac *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_notify");
if (!ac)
return_VOID;
return;
if (acpi_bus_get_device(ac->handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_AC_NOTIFY_STATUS:
......@@ -213,7 +205,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_ac_add(struct acpi_device *device)
......@@ -222,14 +214,13 @@ static int acpi_ac_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ac, 0, sizeof(struct acpi_ac));
ac->handle = device->handle;
......@@ -249,8 +240,6 @@ static int acpi_ac_add(struct acpi_device *device)
ACPI_DEVICE_NOTIFY, acpi_ac_notify,
ac);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
result = -ENODEV;
goto end;
}
......@@ -265,7 +254,7 @@ static int acpi_ac_add(struct acpi_device *device)
kfree(ac);
}
return_VALUE(result);
return result;
}
static int acpi_ac_remove(struct acpi_device *device, int type)
......@@ -273,55 +262,49 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
ac = (struct acpi_ac *)acpi_driver_data(device);
status = acpi_remove_notify_handler(ac->handle,
ACPI_DEVICE_NOTIFY, acpi_ac_notify);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
acpi_ac_remove_fs(device);
kfree(ac);
return_VALUE(0);
return 0;
}
static int __init acpi_ac_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ac_init");
acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
if (!acpi_ac_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_ac_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_ac_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_ac_exit");
acpi_bus_unregister_driver(&acpi_ac_driver);
remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_ac_init);
......
drivers/acpi/acpi_memhotplug.c
浏览文件 @ 3e8d6ad9
......@@ -128,7 +128,6 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
acpi_status status;
struct acpi_memory_info *info, *n;
ACPI_FUNCTION_TRACE("acpi_memory_get_device_resources");
status = acpi_walk_resources(mem_device->handle, METHOD_NAME__CRS,
acpi_memory_get_resource, mem_device);
......@@ -150,23 +149,21 @@ acpi_memory_get_device(acpi_handle handle,
struct acpi_device *device = NULL;
struct acpi_device *pdevice = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_get_device");
if (!acpi_bus_get_device(handle, &device) && device)
goto end;
status = acpi_get_parent(handle, &phandle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error in acpi_get_parent\n"));
return_VALUE(-EINVAL);
ACPI_EXCEPTION((AE_INFO, status, "Cannot find acpi parent"));
return -EINVAL;
}
/* Get the parent device */
status = acpi_bus_get_device(phandle, &pdevice);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error in acpi_bus_get_device\n"));
return_VALUE(-EINVAL);
ACPI_EXCEPTION((AE_INFO, status, "Cannot get acpi bus device"));
return -EINVAL;
}
/*
......@@ -175,30 +172,29 @@ acpi_memory_get_device(acpi_handle handle,
*/
status = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error in acpi_bus_add\n"));
return_VALUE(-EINVAL);
ACPI_EXCEPTION((AE_INFO, status, "Cannot add acpi bus"));
return -EINVAL;
}
end:
*mem_device = acpi_driver_data(device);
if (!(*mem_device)) {
printk(KERN_ERR "\n driver data not found");
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
{
unsigned long current_status;
ACPI_FUNCTION_TRACE("acpi_memory_check_device");
/* Get device present/absent information from the _STA */
if (ACPI_FAILURE(acpi_evaluate_integer(mem_device->handle, "_STA",
NULL, &current_status)))
return_VALUE(-ENODEV);
return -ENODEV;
/*
* Check for device status. Device should be
* present/enabled/functioning.
......@@ -206,9 +202,9 @@ static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
if (!((current_status & ACPI_MEMORY_STA_PRESENT)
&& (current_status & ACPI_MEMORY_STA_ENABLED)
&& (current_status & ACPI_MEMORY_STA_FUNCTIONAL)))
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
......@@ -217,13 +213,11 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
struct acpi_memory_info *info;
int node;
ACPI_FUNCTION_TRACE("acpi_memory_enable_device");
/* Get the range from the _CRS */
result = acpi_memory_get_device_resources(mem_device);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"\nget_device_resources failed\n"));
printk(KERN_ERR PREFIX "get_device_resources failed\n");
mem_device->state = MEMORY_INVALID_STATE;
return result;
}
......@@ -254,7 +248,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
num_enabled++;
}
if (!num_enabled) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "\nadd_memory failed\n"));
printk(KERN_ERR PREFIX "add_memory failed\n");
mem_device->state = MEMORY_INVALID_STATE;
return -EINVAL;
}
......@@ -269,7 +263,6 @@ static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
union acpi_object arg;
unsigned long current_status;
ACPI_FUNCTION_TRACE("acpi_memory_powerdown_device");
/* Issue the _EJ0 command */
arg_list.count = 1;
......@@ -280,21 +273,21 @@ static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
"_EJ0", &arg_list, NULL);
/* Return on _EJ0 failure */
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "_EJ0 failed.\n"));
return_VALUE(-ENODEV);
ACPI_EXCEPTION((AE_INFO, status, "_EJ0 failed"));
return -ENODEV;
}
/* Evalute _STA to check if the device is disabled */
status = acpi_evaluate_integer(mem_device->handle, "_STA",
NULL, &current_status);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
/* Check for device status. Device should be disabled */
if (current_status & ACPI_MEMORY_STA_ENABLED)
return_VALUE(-EINVAL);
return -EINVAL;
return_VALUE(0);
return 0;
}
static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
......@@ -302,7 +295,6 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
int result;
struct acpi_memory_info *info, *n;
ACPI_FUNCTION_TRACE("acpi_memory_disable_device");
/*
* Ask the VM to offline this memory range.
......@@ -320,8 +312,6 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
/* Power-off and eject the device */
result = acpi_memory_powerdown_device(mem_device);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Device Power Down failed.\n"));
/* Set the status of the device to invalid */
mem_device->state = MEMORY_INVALID_STATE;
return result;
......@@ -336,7 +326,6 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
struct acpi_memory_device *mem_device;
struct acpi_device *device;
ACPI_FUNCTION_TRACE("acpi_memory_device_notify");
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
......@@ -348,15 +337,14 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"\nReceived DEVICE CHECK notification for device\n"));
if (acpi_memory_get_device(handle, &mem_device)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error in finding driver data\n"));
return_VOID;
printk(KERN_ERR PREFIX "Cannot find driver data\n");
return;
}
if (!acpi_memory_check_device(mem_device)) {
if (acpi_memory_enable_device(mem_device))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error in acpi_memory_enable_device\n"));
printk(KERN_ERR PREFIX
"Cannot enable memory device\n");
}
break;
case ACPI_NOTIFY_EJECT_REQUEST:
......@@ -364,14 +352,12 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
"\nReceived EJECT REQUEST notification for device\n"));
if (acpi_bus_get_device(handle, &device)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Device doesn't exist\n"));
printk(KERN_ERR PREFIX "Device doesn't exist\n");
break;
}
mem_device = acpi_driver_data(device);
if (!mem_device) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Driver Data is NULL\n"));
printk(KERN_ERR PREFIX "Driver Data is NULL\n");
break;
}
......@@ -382,8 +368,8 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
* with generic sysfs driver
*/
if (acpi_memory_disable_device(mem_device))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error in acpi_memory_disable_device\n"));
printk(KERN_ERR PREFIX
"Disable memory device\n");
/*
* TBD: Invoke acpi_bus_remove to cleanup data structures
*/
......@@ -394,7 +380,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_memory_device_add(struct acpi_device *device)
......@@ -402,14 +388,13 @@ static int acpi_memory_device_add(struct acpi_device *device)
int result;
struct acpi_memory_device *mem_device = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_device_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
mem_device = kmalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
if (!mem_device)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(mem_device, 0, sizeof(struct acpi_memory_device));
INIT_LIST_HEAD(&mem_device->res_list);
......@@ -422,7 +407,7 @@ static int acpi_memory_device_add(struct acpi_device *device)
result = acpi_memory_get_device_resources(mem_device);
if (result) {
kfree(mem_device);
return_VALUE(result);
return result;
}
/* Set the device state */
......@@ -430,22 +415,21 @@ static int acpi_memory_device_add(struct acpi_device *device)
printk(KERN_INFO "%s \n", acpi_device_name(device));
return_VALUE(result);
return result;
}
static int acpi_memory_device_remove(struct acpi_device *device, int type)
{
struct acpi_memory_device *mem_device = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_device_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
mem_device = (struct acpi_memory_device *)acpi_driver_data(device);
kfree(mem_device);
return_VALUE(0);
return 0;
}
static int acpi_memory_device_start (struct acpi_device *device)
......@@ -453,8 +437,6 @@ static int acpi_memory_device_start (struct acpi_device *device)
struct acpi_memory_device *mem_device;
int result = 0;
ACPI_FUNCTION_TRACE("acpi_memory_device_start");
mem_device = acpi_driver_data(device);
if (!acpi_memory_check_device(mem_device)) {
......@@ -464,7 +446,7 @@ static int acpi_memory_device_start (struct acpi_device *device)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error in acpi_memory_enable_device\n"));
}
return_VALUE(result);
return result;
}
/*
......@@ -477,16 +459,15 @@ static acpi_status is_memory_device(acpi_handle handle)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_device_info *info;
ACPI_FUNCTION_TRACE("is_memory_device");
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(AE_ERROR);
return status;
info = buffer.pointer;
if (!(info->valid & ACPI_VALID_HID)) {
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(AE_ERROR);
return AE_ERROR;
}
hardware_id = info->hardware_id.value;
......@@ -495,7 +476,7 @@ static acpi_status is_memory_device(acpi_handle handle)
status = AE_ERROR;
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(status);
return status;
}
static acpi_status
......@@ -504,21 +485,17 @@ acpi_memory_register_notify_handler(acpi_handle handle,
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_register_notify_handler");
status = is_memory_device(handle);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(AE_OK); /* continue */
if (ACPI_FAILURE(status)){
ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
return AE_OK; /* continue */
}
status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
acpi_memory_device_notify, NULL);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
return_ACPI_STATUS(AE_OK); /* continue */
}
return_ACPI_STATUS(status);
/* continue */
return AE_OK;
}
static acpi_status
......@@ -527,22 +504,18 @@ acpi_memory_deregister_notify_handler(acpi_handle handle,
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_deregister_notify_handler");
status = is_memory_device(handle);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(AE_OK); /* continue */
if (ACPI_FAILURE(status)){
ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
return AE_OK; /* continue */
}
status = acpi_remove_notify_handler(handle,
ACPI_SYSTEM_NOTIFY,
acpi_memory_device_notify);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
return_ACPI_STATUS(AE_OK); /* continue */
}
return_ACPI_STATUS(status);
return AE_OK; /* continue */
}
static int __init acpi_memory_device_init(void)
......@@ -550,12 +523,11 @@ static int __init acpi_memory_device_init(void)
int result;
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_device_init");
result = acpi_bus_register_driver(&acpi_memory_device_driver);
if (result < 0)
return_VALUE(-ENODEV);
return -ENODEV;
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
......@@ -563,19 +535,18 @@ static int __init acpi_memory_device_init(void)
NULL, NULL);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "walk_namespace failed\n"));
ACPI_EXCEPTION((AE_INFO, status, "walk_namespace failed"));
acpi_bus_unregister_driver(&acpi_memory_device_driver);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_memory_device_exit(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_device_exit");
/*
* Adding this to un-install notification handlers for all the device
......@@ -587,11 +558,11 @@ static void __exit acpi_memory_device_exit(void)
NULL, NULL);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "walk_namespace failed\n"));
ACPI_EXCEPTION((AE_INFO, status, "walk_namespace failed"));
acpi_bus_unregister_driver(&acpi_memory_device_driver);
return_VOID;
return;
}
module_init(acpi_memory_device_init);
......
drivers/acpi/asus_acpi.c
浏览文件 @ 3e8d6ad9
......@@ -1232,7 +1232,7 @@ static int __init asus_acpi_init(void)
result = acpi_bus_register_driver(&asus_hotk_driver);
if (result < 0) {
remove_proc_entry(PROC_ASUS, acpi_root_dir);
return -ENODEV;
return result;
}
/*
......
drivers/acpi/battery.c
浏览文件 @ 3e8d6ad9
......@@ -132,17 +132,16 @@ acpi_battery_get_info(struct acpi_battery *battery,
struct acpi_buffer data = { 0, NULL };
union acpi_object *package = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_get_info");
if (!battery || !bif)
return_VALUE(-EINVAL);
return -EINVAL;
/* Evalute _BIF */
status = acpi_evaluate_object(battery->handle, "_BIF", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _BIF\n"));
return_VALUE(-ENODEV);
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
return -ENODEV;
}
package = (union acpi_object *)buffer.pointer;
......@@ -151,7 +150,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
status = acpi_extract_package(package, &format, &data);
if (status != AE_BUFFER_OVERFLOW) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error extracting _BIF\n"));
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF"));
result = -ENODEV;
goto end;
}
......@@ -165,7 +164,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error extracting _BIF\n"));
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF"));
kfree(data.pointer);
result = -ENODEV;
goto end;
......@@ -177,7 +176,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
if (!result)
(*bif) = (struct acpi_battery_info *)data.pointer;
return_VALUE(result);
return result;
}
static int
......@@ -193,17 +192,16 @@ acpi_battery_get_status(struct acpi_battery *battery,
struct acpi_buffer data = { 0, NULL };
union acpi_object *package = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_get_status");
if (!battery || !bst)
return_VALUE(-EINVAL);
return -EINVAL;
/* Evalute _BST */
status = acpi_evaluate_object(battery->handle, "_BST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _BST\n"));
return_VALUE(-ENODEV);
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
return -ENODEV;
}
package = (union acpi_object *)buffer.pointer;
......@@ -212,7 +210,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
status = acpi_extract_package(package, &format, &data);
if (status != AE_BUFFER_OVERFLOW) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error extracting _BST\n"));
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST"));
result = -ENODEV;
goto end;
}
......@@ -226,7 +224,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error extracting _BST\n"));
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST"));
kfree(data.pointer);
result = -ENODEV;
goto end;
......@@ -238,7 +236,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
if (!result)
(*bst) = (struct acpi_battery_status *)data.pointer;
return_VALUE(result);
return result;
}
static int
......@@ -248,25 +246,24 @@ acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm)
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_battery_set_alarm");
if (!battery)
return_VALUE(-EINVAL);
return -EINVAL;
if (!battery->flags.alarm)
return_VALUE(-ENODEV);
return -ENODEV;
arg0.integer.value = alarm;
status = acpi_evaluate_object(battery->handle, "_BTP", &arg_list, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm));
battery->alarm = alarm;
return_VALUE(0);
return 0;
}
static int acpi_battery_check(struct acpi_battery *battery)
......@@ -277,18 +274,17 @@ static int acpi_battery_check(struct acpi_battery *battery)
struct acpi_device *device = NULL;
struct acpi_battery_info *bif = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_check");
if (!battery)
return_VALUE(-EINVAL);
return -EINVAL;
result = acpi_bus_get_device(battery->handle, &device);
if (result)
return_VALUE(result);
return result;
result = acpi_bus_get_status(device);
if (result)
return_VALUE(result);
return result;
/* Insertion? */
......@@ -300,7 +296,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
result = acpi_battery_get_info(battery, &bif);
if (result)
return_VALUE(result);
return result;
battery->flags.power_unit = bif->power_unit;
battery->trips.warning = bif->design_capacity_warning;
......@@ -324,7 +320,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
battery->flags.present = device->status.battery_present;
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
......@@ -339,7 +335,6 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
struct acpi_battery_info *bif = NULL;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_info");
if (!battery)
goto end;
......@@ -409,7 +404,7 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
end:
kfree(bif);
return_VALUE(0);
return 0;
}
static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
......@@ -424,7 +419,6 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
struct acpi_battery_status *bst = NULL;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_state");
if (!battery)
goto end;
......@@ -458,8 +452,6 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
if ((bst->state & 0x01) && (bst->state & 0x02)) {
seq_printf(seq,
"charging state: charging/discharging\n");
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Battery Charging and Discharging?\n"));
} else if (bst->state & 0x01)
seq_printf(seq, "charging state: discharging\n");
else if (bst->state & 0x02)
......@@ -489,7 +481,7 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
end:
kfree(bst);
return_VALUE(0);
return 0;
}
static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
......@@ -502,7 +494,6 @@ static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
struct acpi_battery *battery = (struct acpi_battery *)seq->private;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_alarm");
if (!battery)
goto end;
......@@ -527,7 +518,7 @@ static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
seq_printf(seq, "%d %sh\n", (u32) battery->alarm, units);
end:
return_VALUE(0);
return 0;
}
static ssize_t
......@@ -540,25 +531,24 @@ acpi_battery_write_alarm(struct file *file,
struct seq_file *m = (struct seq_file *)file->private_data;
struct acpi_battery *battery = (struct acpi_battery *)m->private;
ACPI_FUNCTION_TRACE("acpi_battery_write_alarm");
if (!battery || (count > sizeof(alarm_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (!battery->flags.present)
return_VALUE(-ENODEV);
return -ENODEV;
if (copy_from_user(alarm_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
alarm_string[count] = '\0';
result = acpi_battery_set_alarm(battery,
simple_strtoul(alarm_string, NULL, 0));
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
......@@ -595,13 +585,12 @@ static int acpi_battery_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_battery_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
......@@ -609,9 +598,7 @@ static int acpi_battery_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_BATTERY_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_BATTERY_FILE_INFO));
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_info_ops;
entry->data = acpi_driver_data(device);
......@@ -622,9 +609,7 @@ static int acpi_battery_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_BATTERY_FILE_STATUS,
S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_BATTERY_FILE_STATUS));
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_state_ops;
entry->data = acpi_driver_data(device);
......@@ -636,21 +621,18 @@ static int acpi_battery_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_BATTERY_FILE_ALARM));
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_alarm_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_battery_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_battery_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_BATTERY_FILE_ALARM,
......@@ -664,7 +646,7 @@ static int acpi_battery_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -676,13 +658,12 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
struct acpi_battery *battery = (struct acpi_battery *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_notify");
if (!battery)
return_VOID;
return;
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_BATTERY_NOTIFY_STATUS:
......@@ -696,7 +677,7 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_battery_add(struct acpi_device *device)
......@@ -705,14 +686,13 @@ static int acpi_battery_add(struct acpi_device *device)
acpi_status status = 0;
struct acpi_battery *battery = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(battery, 0, sizeof(struct acpi_battery));
battery->handle = device->handle;
......@@ -732,8 +712,6 @@ static int acpi_battery_add(struct acpi_device *device)
ACPI_DEVICE_NOTIFY,
acpi_battery_notify, battery);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
result = -ENODEV;
goto end;
}
......@@ -748,7 +726,7 @@ static int acpi_battery_add(struct acpi_device *device)
kfree(battery);
}
return_VALUE(result);
return result;
}
static int acpi_battery_remove(struct acpi_device *device, int type)
......@@ -756,56 +734,50 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
acpi_status status = 0;
struct acpi_battery *battery = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
battery = (struct acpi_battery *)acpi_driver_data(device);
status = acpi_remove_notify_handler(battery->handle,
ACPI_DEVICE_NOTIFY,
acpi_battery_notify);
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
acpi_battery_remove_fs(device);
kfree(battery);
return_VALUE(0);
return 0;
}
static int __init acpi_battery_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_battery_init");
acpi_battery_dir = proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir);
if (!acpi_battery_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_battery_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_battery_driver);
if (result < 0) {
remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_battery_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_battery_exit");
acpi_bus_unregister_driver(&acpi_battery_driver);
remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_battery_init);
......
drivers/acpi/bus.c
浏览文件 @ 3e8d6ad9
......@@ -60,21 +60,19 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_bus_get_device");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* TBD: Support fixed-feature devices */
status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
if (ACPI_FAILURE(status) || !*device) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "No context for object [%p]\n",
handle));
return_VALUE(-ENODEV);
ACPI_EXCEPTION((AE_INFO, status, "No context for object [%p]", handle));
return -ENODEV;
}
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_device);
......@@ -84,10 +82,9 @@ int acpi_bus_get_status(struct acpi_device *device)
acpi_status status = AE_OK;
unsigned long sta = 0;
ACPI_FUNCTION_TRACE("acpi_bus_get_status");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Evaluate _STA if present.
......@@ -96,7 +93,7 @@ int acpi_bus_get_status(struct acpi_device *device)
status =
acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
STRUCT_TO_INT(device->status) = (int)sta;
}
......@@ -120,7 +117,7 @@ int acpi_bus_get_status(struct acpi_device *device)
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);
......@@ -136,11 +133,10 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
struct acpi_device *device = NULL;
unsigned long psc = 0;
ACPI_FUNCTION_TRACE("acpi_bus_get_power");
result = acpi_bus_get_device(handle, &device);
if (result)
return_VALUE(result);
return result;
*state = ACPI_STATE_UNKNOWN;
......@@ -159,12 +155,12 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
status = acpi_evaluate_integer(device->handle, "_PSC",
NULL, &psc);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
device->power.state = (int)psc;
} else if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
return_VALUE(result);
return result;
}
*state = device->power.state;
......@@ -173,7 +169,7 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
device->pnp.bus_id, device->power.state));
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_power);
......@@ -185,21 +181,20 @@ int acpi_bus_set_power(acpi_handle handle, int state)
struct acpi_device *device = NULL;
char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
ACPI_FUNCTION_TRACE("acpi_bus_set_power");
result = acpi_bus_get_device(handle, &device);
if (result)
return_VALUE(result);
return result;
if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
return_VALUE(-EINVAL);
return -EINVAL;
/* Make sure this is a valid target state */
if (!device->flags.power_manageable) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Device is not power manageable\n"));
return_VALUE(-ENODEV);
printk(KERN_DEBUG "Device `[%s]is not power manageable",
device->kobj.name);
return -ENODEV;
}
/*
* Get device's current power state if it's unknown
......@@ -211,18 +206,18 @@ int acpi_bus_set_power(acpi_handle handle, int state)
if (state == device->power.state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
return_VALUE(0);
return 0;
}
}
if (!device->power.states[state].flags.valid) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Device does not support D%d\n",
state));
return_VALUE(-ENODEV);
printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Cannot set device to a higher-powered state than parent\n"));
return_VALUE(-ENODEV);
printk(KERN_WARNING PREFIX
"Cannot set device to a higher-powered"
" state than parent\n");
return -ENODEV;
}
/*
......@@ -264,15 +259,15 @@ int acpi_bus_set_power(acpi_handle handle, int state)
end:
if (result)
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Error transitioning device [%s] to D%d\n",
device->pnp.bus_id, state));
printk(KERN_WARNING PREFIX
"Transitioning device [%s] to D%d\n",
device->pnp.bus_id, state);
else
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
return_VALUE(result);
return result;
}
EXPORT_SYMBOL(acpi_bus_set_power);
......@@ -293,18 +288,17 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
struct acpi_bus_event *event = NULL;
unsigned long flags = 0;
ACPI_FUNCTION_TRACE("acpi_bus_generate_event");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* drop event on the floor if no one's listening */
if (!event_is_open)
return_VALUE(0);
return 0;
event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
return_VALUE(-ENOMEM);
return -ENOMEM;
strcpy(event->device_class, device->pnp.device_class);
strcpy(event->bus_id, device->pnp.bus_id);
......@@ -317,7 +311,7 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
wake_up_interruptible(&acpi_bus_event_queue);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_generate_event);
......@@ -329,10 +323,9 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
DECLARE_WAITQUEUE(wait, current);
ACPI_FUNCTION_TRACE("acpi_bus_receive_event");
if (!event)
return_VALUE(-EINVAL);
return -EINVAL;
if (list_empty(&acpi_bus_event_list)) {
......@@ -346,7 +339,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
set_current_state(TASK_RUNNING);
if (signal_pending(current))
return_VALUE(-ERESTARTSYS);
return -ERESTARTSYS;
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
......@@ -357,13 +350,13 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
memcpy(event, entry, sizeof(struct acpi_bus_event));
kfree(entry);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_receive_event);
......@@ -378,10 +371,9 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
acpi_status status = 0;
struct acpi_device_status old_status;
ACPI_FUNCTION_TRACE("acpi_bus_check_device");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
if (status_changed)
*status_changed = 0;
......@@ -398,15 +390,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
if (status_changed)
*status_changed = 1;
}
return_VALUE(0);
return 0;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
return_VALUE(0);
return 0;
if (status_changed)
*status_changed = 1;
......@@ -422,7 +414,7 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
/* TBD: Handle device removal */
}
return_VALUE(0);
return 0;
}
static int acpi_bus_check_scope(struct acpi_device *device)
......@@ -430,25 +422,24 @@ static int acpi_bus_check_scope(struct acpi_device *device)
int result = 0;
int status_changed = 0;
ACPI_FUNCTION_TRACE("acpi_bus_check_scope");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* Status Change? */
result = acpi_bus_check_device(device, &status_changed);
if (result)
return_VALUE(result);
return result;
if (!status_changed)
return_VALUE(0);
return 0;
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
return_VALUE(0);
return 0;
}
/**
......@@ -461,10 +452,9 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_notify");
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (type) {
......@@ -539,7 +529,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
}
return_VOID;
return;
}
/* --------------------------------------------------------------------------
......@@ -553,7 +543,6 @@ static int __init acpi_bus_init_irq(void)
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_init_irq");
/*
* Let the system know what interrupt model we are using by
......@@ -572,7 +561,7 @@ static int __init acpi_bus_init_irq(void)
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
......@@ -581,11 +570,11 @@ static int __init acpi_bus_init_irq(void)
status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PIC\n"));
return_VALUE(-ENODEV);
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
return -ENODEV;
}
return_VALUE(0);
return 0;
}
void __init acpi_early_init(void)
......@@ -593,10 +582,9 @@ void __init acpi_early_init(void)
acpi_status status = AE_OK;
struct acpi_buffer buffer = { sizeof(acpi_fadt), &acpi_fadt };
ACPI_FUNCTION_TRACE("acpi_early_init");
if (acpi_disabled)
return_VOID;
return;
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
......@@ -656,11 +644,11 @@ void __init acpi_early_init(void)
goto error0;
}
return_VOID;
return;
error0:
disable_acpi();
return_VOID;
return;
}
static int __init acpi_bus_init(void)
......@@ -669,7 +657,6 @@ static int __init acpi_bus_init(void)
acpi_status status = AE_OK;
extern acpi_status acpi_os_initialize1(void);
ACPI_FUNCTION_TRACE("acpi_bus_init");
status = acpi_os_initialize1();
......@@ -731,12 +718,12 @@ static int __init acpi_bus_init(void)
*/
acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
return_VALUE(0);
return 0;
/* Mimic structured exception handling */
error1:
acpi_terminate();
return_VALUE(-ENODEV);
return -ENODEV;
}
decl_subsys(acpi, NULL, NULL);
......@@ -745,11 +732,10 @@ static int __init acpi_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_init");
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
firmware_register(&acpi_subsys);
......@@ -770,7 +756,7 @@ static int __init acpi_init(void)
} else
disable_acpi();
return_VALUE(result);
return result;
}
subsys_initcall(acpi_init);
drivers/acpi/button.c
浏览文件 @ 3e8d6ad9
......@@ -112,15 +112,14 @@ static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_button *button = (struct acpi_button *)seq->private;
ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
if (!button || !button->device)
return_VALUE(0);
return 0;
seq_printf(seq, "type: %s\n",
acpi_device_name(button->device));
return_VALUE(0);
return 0;
}
static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
......@@ -134,10 +133,9 @@ static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
acpi_status status;
unsigned long state;
ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
if (!button || !button->device)
return_VALUE(0);
return 0;
status = acpi_evaluate_integer(button->handle, "_LID", NULL, &state);
if (ACPI_FAILURE(status)) {
......@@ -147,7 +145,7 @@ static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
(state ? "open" : "closed"));
}
return_VALUE(0);
return 0;
}
static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
......@@ -164,10 +162,9 @@ static int acpi_button_add_fs(struct acpi_device *device)
struct proc_dir_entry *entry = NULL;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add_fs");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
button = acpi_driver_data(device);
......@@ -195,21 +192,19 @@ static int acpi_button_add_fs(struct acpi_device *device)
}
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
entry->owner = THIS_MODULE;
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
/* 'info' [R] */
entry = create_proc_entry(ACPI_BUTTON_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_BUTTON_FILE_INFO));
return -ENODEV;
else {
entry->proc_fops = &acpi_button_info_fops;
entry->data = acpi_driver_data(device);
......@@ -221,9 +216,7 @@ static int acpi_button_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_BUTTON_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_BUTTON_FILE_INFO));
return -ENODEV;
else {
entry->proc_fops = &acpi_button_state_fops;
entry->data = acpi_driver_data(device);
......@@ -231,14 +224,13 @@ static int acpi_button_add_fs(struct acpi_device *device)
}
}
return_VALUE(0);
return 0;
}
static int acpi_button_remove_fs(struct acpi_device *device)
{
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
button = acpi_driver_data(device);
if (acpi_device_dir(device)) {
......@@ -253,7 +245,7 @@ static int acpi_button_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -264,10 +256,9 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_button *button = (struct acpi_button *)data;
ACPI_FUNCTION_TRACE("acpi_button_notify");
if (!button || !button->device)
return_VOID;
return;
switch (event) {
case ACPI_BUTTON_NOTIFY_STATUS:
......@@ -280,21 +271,20 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static acpi_status acpi_button_notify_fixed(void *data)
{
struct acpi_button *button = (struct acpi_button *)data;
ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
if (!button)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
static int acpi_button_add(struct acpi_device *device)
......@@ -303,14 +293,13 @@ static int acpi_button_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
if (!button)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(button, 0, sizeof(struct acpi_button));
button->device = device;
......@@ -349,8 +338,8 @@ static int acpi_button_add(struct acpi_device *device)
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
} else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
acpi_device_hid(device)));
printk(KERN_ERR PREFIX "Unsupported hid [%s]\n",
acpi_device_hid(device));
result = -ENODEV;
goto end;
}
......@@ -381,8 +370,6 @@ static int acpi_button_add(struct acpi_device *device)
}
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
result = -ENODEV;
goto end;
}
......@@ -406,7 +393,7 @@ static int acpi_button_add(struct acpi_device *device)
kfree(button);
}
return_VALUE(result);
return result;
}
static int acpi_button_remove(struct acpi_device *device, int type)
......@@ -414,10 +401,9 @@ static int acpi_button_remove(struct acpi_device *device, int type)
acpi_status status = 0;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
button = acpi_driver_data(device);
......@@ -440,39 +426,33 @@ static int acpi_button_remove(struct acpi_device *device, int type)
break;
}
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
acpi_button_remove_fs(device);
kfree(button);
return_VALUE(0);
return 0;
}
static int __init acpi_button_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_button_init");
acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
if (!acpi_button_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_button_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_button_driver);
if (result < 0) {
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_button_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_button_exit");
acpi_bus_unregister_driver(&acpi_button_driver);
......@@ -484,7 +464,7 @@ static void __exit acpi_button_exit(void)
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_button_init);
......
drivers/acpi/container.c
浏览文件 @ 3e8d6ad9
......@@ -73,17 +73,16 @@ static int is_device_present(acpi_handle handle)
acpi_status status;
unsigned long sta;
ACPI_FUNCTION_TRACE("is_device_present");
status = acpi_get_handle(handle, "_STA", &temp);
if (ACPI_FAILURE(status))
return_VALUE(1); /* _STA not found, assmue device present */
return 1; /* _STA not found, assmue device present */
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
return_VALUE(0); /* Firmware error */
return 0; /* Firmware error */
return_VALUE((sta & ACPI_STA_PRESENT) == ACPI_STA_PRESENT);
return ((sta & ACPI_STA_PRESENT) == ACPI_STA_PRESENT);
}
/*******************************************************************/
......@@ -91,16 +90,15 @@ static int acpi_container_add(struct acpi_device *device)
{
struct acpi_container *container;
ACPI_FUNCTION_TRACE("acpi_container_add");
if (!device) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "device is NULL\n"));
return_VALUE(-EINVAL);
printk(KERN_ERR PREFIX "device is NULL\n");
return -EINVAL;
}
container = kmalloc(sizeof(struct acpi_container), GFP_KERNEL);
if (!container)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(container, 0, sizeof(struct acpi_container));
container->handle = device->handle;
......@@ -111,7 +109,7 @@ static int acpi_container_add(struct acpi_device *device)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device <%s> bid <%s>\n",
acpi_device_name(device), acpi_device_bid(device)));
return_VALUE(0);
return 0;
}
static int acpi_container_remove(struct acpi_device *device, int type)
......@@ -130,23 +128,22 @@ static int container_device_add(struct acpi_device **device, acpi_handle handle)
struct acpi_device *pdev;
int result;
ACPI_FUNCTION_TRACE("container_device_add");
if (acpi_get_parent(handle, &phandle)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_get_device(phandle, &pdev)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_DEVICE)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
result = acpi_bus_start(*device);
return_VALUE(result);
return result;
}
static void container_notify_cb(acpi_handle handle, u32 type, void *context)
......@@ -156,7 +153,6 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
int present;
acpi_status status;
ACPI_FUNCTION_TRACE("container_notify_cb");
present = is_device_present(handle);
......@@ -192,7 +188,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
default:
break;
}
return_VOID;
return;
}
static acpi_status
......@@ -205,11 +201,10 @@ container_walk_namespace_cb(acpi_handle handle,
acpi_status status;
int *action = context;
ACPI_FUNCTION_TRACE("container_walk_namespace_cb");
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status) || !buffer.pointer) {
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
info = buffer.pointer;
......@@ -243,7 +238,7 @@ container_walk_namespace_cb(acpi_handle handle,
end:
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
static int __init acpi_container_init(void)
......@@ -269,7 +264,6 @@ static void __exit acpi_container_exit(void)
{
int action = UNINSTALL_NOTIFY_HANDLER;
ACPI_FUNCTION_TRACE("acpi_container_exit");
acpi_walk_namespace(ACPI_TYPE_DEVICE,
ACPI_ROOT_OBJECT,
......@@ -278,7 +272,7 @@ static void __exit acpi_container_exit(void)
acpi_bus_unregister_driver(&acpi_container_driver);
return_VOID;
return;
}
module_init(acpi_container_init);
......
drivers/acpi/debug.c
浏览文件 @ 3e8d6ad9
......@@ -155,13 +155,12 @@ acpi_system_write_debug(struct file *file,
{
char debug_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_system_write_debug");
if (count > sizeof(debug_string) - 1)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(debug_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
debug_string[count] = '\0';
......@@ -173,10 +172,10 @@ acpi_system_write_debug(struct file *file,
acpi_dbg_level = simple_strtoul(debug_string, NULL, 0);
break;
default:
return_VALUE(-EINVAL);
return -EINVAL;
}
return_VALUE(count);
return count;
}
static int __init acpi_debug_init(void)
......@@ -185,10 +184,9 @@ static int __init acpi_debug_init(void)
int error = 0;
char *name;
ACPI_FUNCTION_TRACE("acpi_debug_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
/* 'debug_layer' [R/W] */
name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
......@@ -213,15 +211,12 @@ static int __init acpi_debug_init(void)
goto Error;
Done:
return_VALUE(error);
return error;
Error:
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' proc fs entry\n", name));
remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir);
remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir);
error = -EFAULT;
error = -ENODEV;
goto Done;
}
......
drivers/acpi/dispatcher/dsinit.c
浏览文件 @ 3e8d6ad9
......@@ -125,37 +125,7 @@ acpi_ds_init_one_object(acpi_handle obj_handle,
if (info->table_desc->pointer->revision == 1) {
node->flags |= ANOBJ_DATA_WIDTH_32;
}
#ifdef ACPI_INIT_PARSE_METHODS
/*
* Note 11/2005: Removed this code to parse all methods during table
* load because it causes problems if there are any errors during the
* parse. Also, it seems like overkill and we probably don't want to
* abort a table load because of an issue with a single method.
*/
/*
* Print a dot for each method unless we are going to print
* the entire pathname
*/
if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, "."));
}
/*
* Always parse methods to detect errors, we will delete
* the parse tree below
*/
status = acpi_ds_parse_method(obj_handle);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO,
"Method %p [%4.4s] - parse failure, %s",
obj_handle,
acpi_ut_get_node_name(obj_handle),
acpi_format_exception(status)));
/* This parse failed, but we will continue parsing more methods */
}
#endif
info->method_count++;
break;
......
drivers/acpi/dispatcher/dsmethod.c
浏览文件 @ 3e8d6ad9
......@@ -52,6 +52,10 @@
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dsmethod")
/* Local prototypes */
static acpi_status
acpi_ds_create_method_mutex(union acpi_operand_object *method_desc);
/*******************************************************************************
*
* FUNCTION: acpi_ds_method_error
......@@ -67,6 +71,7 @@ ACPI_MODULE_NAME("dsmethod")
* Note: Allows the exception handler to change the status code
*
******************************************************************************/
acpi_status
acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
{
......@@ -111,13 +116,53 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_create_method_mutex
*
* PARAMETERS: obj_desc - The method object
*
* RETURN: Status
*
* DESCRIPTION: Create a mutex object for a serialized control method
*
******************************************************************************/
static acpi_status
acpi_ds_create_method_mutex(union acpi_operand_object *method_desc)
{
union acpi_operand_object *mutex_desc;
acpi_status status;
ACPI_FUNCTION_NAME(ds_create_method_mutex);
/* Create the new mutex object */
mutex_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
if (!mutex_desc) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Create the actual OS Mutex */
status = acpi_os_create_mutex(&mutex_desc->mutex.os_mutex);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
mutex_desc->mutex.sync_level = method_desc->method.sync_level;
method_desc->method.mutex = mutex_desc;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_begin_method_execution
*
* PARAMETERS: method_node - Node of the method
* obj_desc - The method object
* calling_method_node - Caller of this method (if non-null)
* walk_state - current state, NULL if not yet executing
* a method.
*
* RETURN: Status
*
......@@ -128,9 +173,9 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
******************************************************************************/
acpi_status
acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
union acpi_operand_object * obj_desc,
struct acpi_namespace_node * calling_method_node)
acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
union acpi_operand_object *obj_desc,
struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
......@@ -149,35 +194,80 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
}
/*
* If there is a concurrency limit on this method, we need to
* obtain a unit from the method semaphore.
* If this method is serialized, we need to acquire the method mutex.
*/
if (obj_desc->method.semaphore) {
if (obj_desc->method.method_flags & AML_METHOD_SERIALIZED) {
/*
* Allow recursive method calls, up to the reentrancy/concurrency
* limit imposed by the SERIALIZED rule and the sync_level method
* parameter.
*
* The point of this code is to avoid permanently blocking a
* thread that is making recursive method calls.
* Create a mutex for the method if it is defined to be Serialized
* and a mutex has not already been created. We defer the mutex creation
* until a method is actually executed, to minimize the object count
*/
if (method_node == calling_method_node) {
if (obj_desc->method.thread_count >=
obj_desc->method.concurrency) {
return_ACPI_STATUS(AE_AML_METHOD_LIMIT);
if (!obj_desc->method.mutex) {
status = acpi_ds_create_method_mutex(obj_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Get a unit from the method semaphore. This releases the
* interpreter if we block (then reacquires it)
* The current_sync_level (per-thread) must be less than or equal to
* the sync level of the method. This mechanism provides some
* deadlock prevention
*
* Top-level method invocation has no walk state at this point
*/
status =
acpi_ex_system_wait_semaphore(obj_desc->method.semaphore,
ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
if (walk_state &&
(walk_state->thread->current_sync_level >
obj_desc->method.mutex->mutex.sync_level)) {
ACPI_ERROR((AE_INFO,
"Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%d)",
acpi_ut_get_node_name(method_node),
walk_state->thread->current_sync_level));
return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
/*
* Obtain the method mutex if necessary. Do not acquire mutex for a
* recursive call.
*/
if (!walk_state ||
!obj_desc->method.mutex->mutex.owner_thread ||
(walk_state->thread !=
obj_desc->method.mutex->mutex.owner_thread)) {
/*
* Acquire the method mutex. This releases the interpreter if we
* block (and reacquires it before it returns)
*/
status =
acpi_ex_system_wait_mutex(obj_desc->method.mutex->
mutex.os_mutex,
ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Update the mutex and walk info and save the original sync_level */
if (walk_state) {
obj_desc->method.mutex->mutex.
original_sync_level =
walk_state->thread->current_sync_level;
obj_desc->method.mutex->mutex.owner_thread =
walk_state->thread;
walk_state->thread->current_sync_level =
obj_desc->method.sync_level;
} else {
obj_desc->method.mutex->mutex.
original_sync_level =
obj_desc->method.mutex->mutex.sync_level;
}
}
/* Always increase acquisition depth */
obj_desc->method.mutex->mutex.acquisition_depth++;
}
/*
......@@ -200,10 +290,10 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node * method_node,
return_ACPI_STATUS(status);
cleanup:
/* On error, must signal the method semaphore if present */
/* On error, must release the method mutex (if present) */
if (obj_desc->method.semaphore) {
(void)acpi_os_signal_semaphore(obj_desc->method.semaphore, 1);
if (obj_desc->method.mutex) {
acpi_os_release_mutex(obj_desc->method.mutex->mutex.os_mutex);
}
return_ACPI_STATUS(status);
}
......@@ -253,10 +343,10 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
return_ACPI_STATUS(AE_NULL_OBJECT);
}
/* Init for new method, possibly wait on concurrency semaphore */
/* Init for new method, possibly wait on method mutex */
status = acpi_ds_begin_method_execution(method_node, obj_desc,
this_walk_state->method_node);
this_walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
......@@ -478,6 +568,8 @@ acpi_ds_restart_control_method(struct acpi_walk_state *walk_state,
* created, delete all locals and arguments, and delete the parse
* tree if requested.
*
* MUTEX: Interpreter is locked
*
******************************************************************************/
void
......@@ -503,26 +595,21 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
}
/*
* Lock the parser while we terminate this method.
* If this is the last thread executing the method,
* we have additional cleanup to perform
* If method is serialized, release the mutex and restore the
* current sync level for this thread
*/
status = acpi_ut_acquire_mutex(ACPI_MTX_CONTROL_METHOD);
if (ACPI_FAILURE(status)) {
return_VOID;
}
if (method_desc->method.mutex) {
/* Signal completion of the execution of this method if necessary */
/* Acquisition Depth handles recursive calls */
if (method_desc->method.semaphore) {
status =
acpi_os_signal_semaphore(method_desc->method.semaphore, 1);
if (ACPI_FAILURE(status)) {
/* Ignore error and continue */
method_desc->method.mutex->mutex.acquisition_depth--;
if (!method_desc->method.mutex->mutex.acquisition_depth) {
walk_state->thread->current_sync_level =
method_desc->method.mutex->mutex.
original_sync_level;
ACPI_EXCEPTION((AE_INFO, status,
"Could not signal method semaphore"));
acpi_os_release_mutex(method_desc->method.mutex->mutex.
os_mutex);
}
}
......@@ -537,7 +624,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
goto exit;
return_VOID;
}
/*
......@@ -580,18 +667,16 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
/*
* Support to dynamically change a method from not_serialized to
* Serialized if it appears that the method is incorrectly written and
* does not support multiple thread execution. The best example of this
* is if such a method creates namespace objects and blocks. A second
* does not support multiple thread execution. The best example of this
* is if such a method creates namespace objects and blocks. A second
* thread will fail with an AE_ALREADY_EXISTS exception
*
* This code is here because we must wait until the last thread exits
* before creating the synchronization semaphore.
*/
if ((method_desc->method.concurrency == 1) &&
(!method_desc->method.semaphore)) {
status = acpi_os_create_semaphore(1, 1,
&method_desc->method.
semaphore);
if ((method_desc->method.method_flags & AML_METHOD_SERIALIZED)
&& (!method_desc->method.mutex)) {
status = acpi_ds_create_method_mutex(method_desc);
}
/* No more threads, we can free the owner_id */
......@@ -599,144 +684,5 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
acpi_ut_release_owner_id(&method_desc->method.owner_id);
}
exit:
(void)acpi_ut_release_mutex(ACPI_MTX_CONTROL_METHOD);
return_VOID;
}
#ifdef ACPI_INIT_PARSE_METHODS
/*
* Note 11/2005: Removed this code to parse all methods during table
* load because it causes problems if there are any errors during the
* parse. Also, it seems like overkill and we probably don't want to
* abort a table load because of an issue with a single method.
*/
/*******************************************************************************
*
* FUNCTION: acpi_ds_parse_method
*
* PARAMETERS: Node - Method node
*
* RETURN: Status
*
* DESCRIPTION: Parse the AML that is associated with the method.
*
* MUTEX: Assumes parser is locked
*
******************************************************************************/
acpi_status acpi_ds_parse_method(struct acpi_namespace_node *node)
{
acpi_status status;
union acpi_operand_object *obj_desc;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
ACPI_FUNCTION_TRACE_PTR(ds_parse_method, node);
/* Parameter Validation */
if (!node) {
return_ACPI_STATUS(AE_NULL_ENTRY);
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Parsing [%4.4s] **** NamedObj=%p\n",
acpi_ut_get_node_name(node), node));
/* Extract the method object from the method Node */
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
return_ACPI_STATUS(AE_NULL_OBJECT);
}
/* Create a mutex for the method if there is a concurrency limit */
if ((obj_desc->method.concurrency != ACPI_INFINITE_CONCURRENCY) &&
(!obj_desc->method.semaphore)) {
status = acpi_os_create_semaphore(obj_desc->method.concurrency,
obj_desc->method.concurrency,
&obj_desc->method.semaphore);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Allocate a new parser op to be the root of the parsed
* method tree
*/
op = acpi_ps_alloc_op(AML_METHOD_OP);
if (!op) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* Init new op with the method name and pointer back to the Node */
acpi_ps_set_name(op, node->name.integer);
op->common.node = node;
/*
* Get a new owner_id for objects created by this method. Namespace
* objects (such as Operation Regions) can be created during the
* first pass parse.
*/
status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Create and initialize a new walk state */
walk_state =
acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, NULL,
NULL);
if (!walk_state) {
status = AE_NO_MEMORY;
goto cleanup2;
}
status = acpi_ds_init_aml_walk(walk_state, op, node,
obj_desc->method.aml_start,
obj_desc->method.aml_length, NULL, 1);
if (ACPI_FAILURE(status)) {
acpi_ds_delete_walk_state(walk_state);
goto cleanup2;
}
/*
* Parse the method, first pass
*
* The first pass load is where newly declared named objects are added into
* the namespace. Actual evaluation of the named objects (what would be
* called a "second pass") happens during the actual execution of the
* method so that operands to the named objects can take on dynamic
* run-time values.
*/
status = acpi_ps_parse_aml(walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup2;
}
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** [%4.4s] Parsed **** NamedObj=%p Op=%p\n",
acpi_ut_get_node_name(node), node, op));
/*
* Delete the parse tree. We simply re-parse the method for every
* execution since there isn't much overhead (compared to keeping lots
* of parse trees around)
*/
acpi_ns_delete_namespace_subtree(node);
acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
cleanup2:
acpi_ut_release_owner_id(&obj_desc->method.owner_id);
cleanup:
acpi_ps_delete_parse_tree(op);
return_ACPI_STATUS(status);
}
#endif
drivers/acpi/dispatcher/dswexec.c
浏览文件 @ 3e8d6ad9
......@@ -472,7 +472,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
acpi_ds_result_push(walk_state->result_obj,
walk_state);
}
break;
default:
......@@ -510,6 +509,7 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Method Reference in a Package, Op=%p\n",
op));
op->common.node =
(struct acpi_namespace_node *)op->asl.value.
arg->asl.node->object;
......@@ -670,7 +670,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
status = acpi_ds_result_stack_pop(walk_state);
}
break;
case AML_TYPE_UNDEFINED:
......@@ -708,7 +707,6 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
* Check if we just completed the evaluation of a
* conditional predicate
*/
if ((ACPI_SUCCESS(status)) &&
(walk_state->control_state) &&
(walk_state->control_state->common.state ==
......
drivers/acpi/dispatcher/dswload.c
浏览文件 @ 3e8d6ad9
......@@ -175,7 +175,7 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
if (status == AE_NOT_FOUND) {
/*
* Table disassembly:
* Target of Scope() not found. Generate an External for it, and
* Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0);
......@@ -210,16 +210,15 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type. This
* These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*
* Note: silently change the type here. On the second pass, we will report
* Note: silently change the type here. On the second pass, we will report
* a warning
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
path,
......@@ -242,7 +241,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
break;
default:
/*
* For all other named opcodes, we will enter the name into
* the namespace.
......@@ -259,7 +257,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
* buffer_field, or Package), the name of the object is already
* in the namespace.
*/
if (walk_state->deferred_node) {
/* This name is already in the namespace, get the node */
......@@ -293,8 +290,8 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*/
......@@ -327,12 +324,12 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
(status);
}
}
status = AE_OK;
}
}
if (ACPI_FAILURE(status)) {
ACPI_ERROR_NAMESPACE(path, status);
return_ACPI_STATUS(status);
}
......@@ -434,9 +431,13 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
status =
acpi_ex_create_region(op->named.data,
op->named.length,
(acpi_adr_space_type)
((op->common.value.arg)->
common.value.integer),
(acpi_adr_space_type) ((op->
common.
value.
arg)->
common.
value.
integer),
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
......@@ -474,7 +475,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
......@@ -499,6 +500,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
length,
walk_state);
}
walk_state->operands[0] = NULL;
walk_state->num_operands = 0;
......@@ -570,7 +572,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
(walk_state->op_info->class == AML_CLASS_CONTROL)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Begin/EXEC: %s (fl %8.8X)\n",
walk_state->op_info->name,
......@@ -602,7 +603,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
} else {
/* Get name from the op */
buffer_ptr = (char *)&op->named.name;
buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
}
} else {
/* Get the namestring from the raw AML */
......@@ -629,7 +630,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
break;
case AML_INT_NAMEPATH_OP:
/*
* The name_path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
......@@ -642,7 +642,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
break;
case AML_SCOPE_OP:
/*
* The Path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
......@@ -664,6 +663,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
#endif
return_ACPI_STATUS(status);
}
/*
* We must check to make sure that the target is
* one of the opcodes that actually opens a scope
......@@ -683,13 +683,12 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type. This
* These types we will allow, but we will change the type. This
* enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*/
ACPI_WARNING((AE_INFO,
"Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)",
buffer_ptr,
......@@ -729,14 +728,14 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
return_ACPI_STATUS(AE_OK);
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*
......@@ -787,7 +786,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
* can get it again quickly when this scope is closed
*/
op->common.node = node;
return_ACPI_STATUS(status);
}
......@@ -922,7 +920,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
#ifndef ACPI_NO_METHOD_EXECUTION
case AML_TYPE_CREATE_FIELD:
/*
* Create the field object, but the field buffer and index must
* be evaluated later during the execution phase
......@@ -931,7 +928,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
break;
case AML_TYPE_NAMED_FIELD:
/*
* If we are executing a method, initialize the field
*/
......@@ -1051,6 +1047,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
* argument is the space_id. (We must save the address of the
* AML of the address and length operands)
*/
/*
* If we have a valid region, initialize it
* Namespace is NOT locked at this point.
......@@ -1080,7 +1077,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
* method_op pkg_length name_string method_flags term_list
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
......
drivers/acpi/dock.c 0 → 100644
浏览文件 @ 3e8d6ad9
/*
* dock.c - ACPI dock station driver
*
* Copyright (C) 2006 Kristen Carlson Accardi <kristen.c.accardi@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/notifier.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#define ACPI_DOCK_DRIVER_NAME "ACPI Dock Station Driver"
ACPI_MODULE_NAME("dock")
MODULE_AUTHOR("Kristen Carlson Accardi");
MODULE_DESCRIPTION(ACPI_DOCK_DRIVER_NAME);
MODULE_LICENSE("GPL");
static struct atomic_notifier_head dock_notifier_list;
struct dock_station {
acpi_handle handle;
unsigned long last_dock_time;
u32 flags;
spinlock_t dd_lock;
spinlock_t hp_lock;
struct list_head dependent_devices;
struct list_head hotplug_devices;
};
struct dock_dependent_device {
struct list_head list;
struct list_head hotplug_list;
acpi_handle handle;
acpi_notify_handler handler;
void *context;
};
#define DOCK_DOCKING 0x00000001
#define DOCK_EVENT KOBJ_DOCK
#define UNDOCK_EVENT KOBJ_UNDOCK
static struct dock_station *dock_station;
/*****************************************************************************
* Dock Dependent device functions *
*****************************************************************************/
/**
* alloc_dock_dependent_device - allocate and init a dependent device
* @handle: the acpi_handle of the dependent device
*
* Allocate memory for a dependent device structure for a device referenced
* by the acpi handle
*/
static struct dock_dependent_device *
alloc_dock_dependent_device(acpi_handle handle)
{
struct dock_dependent_device *dd;
dd = kzalloc(sizeof(*dd), GFP_KERNEL);
if (dd) {
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
INIT_LIST_HEAD(&dd->hotplug_list);
}
return dd;
}
/**
* add_dock_dependent_device - associate a device with the dock station
* @ds: The dock station
* @dd: The dependent device
*
* Add the dependent device to the dock's dependent device list.
*/
static void
add_dock_dependent_device(struct dock_station *ds,
struct dock_dependent_device *dd)
{
spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
spin_unlock(&ds->dd_lock);
}
/**
* dock_add_hotplug_device - associate a hotplug handler with the dock station
* @ds: The dock station
* @dd: The dependent device struct
*
* Add the dependent device to the dock's hotplug device list
*/
static void
dock_add_hotplug_device(struct dock_station *ds,
struct dock_dependent_device *dd)
{
spin_lock(&ds->hp_lock);
list_add_tail(&dd->hotplug_list, &ds->hotplug_devices);
spin_unlock(&ds->hp_lock);
}
/**
* dock_del_hotplug_device - remove a hotplug handler from the dock station
* @ds: The dock station
* @dd: the dependent device struct
*
* Delete the dependent device from the dock's hotplug device list
*/
static void
dock_del_hotplug_device(struct dock_station *ds,
struct dock_dependent_device *dd)
{
spin_lock(&ds->hp_lock);
list_del(&dd->hotplug_list);
spin_unlock(&ds->hp_lock);
}
/**
* find_dock_dependent_device - get a device dependent on this dock
* @ds: the dock station
* @handle: the acpi_handle of the device we want
*
* iterate over the dependent device list for this dock. If the
* dependent device matches the handle, return.
*/
static struct dock_dependent_device *
find_dock_dependent_device(struct dock_station *ds, acpi_handle handle)
{
struct dock_dependent_device *dd;
spin_lock(&ds->dd_lock);
list_for_each_entry(dd, &ds->dependent_devices, list) {
if (handle == dd->handle) {
spin_unlock(&ds->dd_lock);
return dd;
}
}
spin_unlock(&ds->dd_lock);
return NULL;
}
/*****************************************************************************
* Dock functions *
*****************************************************************************/
/**
* is_dock - see if a device is a dock station
* @handle: acpi handle of the device
*
* If an acpi object has a _DCK method, then it is by definition a dock
* station, so return true.
*/
static int is_dock(acpi_handle handle)
{
acpi_status status;
acpi_handle tmp;
status = acpi_get_handle(handle, "_DCK", &tmp);
if (ACPI_FAILURE(status))
return 0;
return 1;
}
/**
* is_dock_device - see if a device is on a dock station
* @handle: acpi handle of the device
*
* If this device is either the dock station itself,
* or is a device dependent on the dock station, then it
* is a dock device
*/
int is_dock_device(acpi_handle handle)
{
if (!dock_station)
return 0;
if (is_dock(handle) || find_dock_dependent_device(dock_station, handle))
return 1;
return 0;
}
EXPORT_SYMBOL_GPL(is_dock_device);
/**
* dock_present - see if the dock station is present.
* @ds: the dock station
*
* execute the _STA method. note that present does not
* imply that we are docked.
*/
static int dock_present(struct dock_station *ds)
{
unsigned long sta;
acpi_status status;
if (ds) {
status = acpi_evaluate_integer(ds->handle, "_STA", NULL, &sta);
if (ACPI_SUCCESS(status) && sta)
return 1;
}
return 0;
}
/**
* dock_create_acpi_device - add new devices to acpi
* @handle - handle of the device to add
*
* This function will create a new acpi_device for the given
* handle if one does not exist already. This should cause
* acpi to scan for drivers for the given devices, and call
* matching driver's add routine.
*
* Returns a pointer to the acpi_device corresponding to the handle.
*/
static struct acpi_device * dock_create_acpi_device(acpi_handle handle)
{
struct acpi_device *device = NULL;
struct acpi_device *parent_device;
acpi_handle parent;
int ret;
if (acpi_bus_get_device(handle, &device)) {
/*
* no device created for this object,
* so we should create one.
*/
acpi_get_parent(handle, &parent);
if (acpi_bus_get_device(parent, &parent_device))
parent_device = NULL;
ret = acpi_bus_add(&device, parent_device, handle,
ACPI_BUS_TYPE_DEVICE);
if (ret) {
pr_debug("error adding bus, %x\n",
-ret);
return NULL;
}
}
return device;
}
/**
* dock_remove_acpi_device - remove the acpi_device struct from acpi
* @handle - the handle of the device to remove
*
* Tell acpi to remove the acpi_device. This should cause any loaded
* driver to have it's remove routine called.
*/
static void dock_remove_acpi_device(acpi_handle handle)
{
struct acpi_device *device;
int ret;
if (!acpi_bus_get_device(handle, &device)) {
ret = acpi_bus_trim(device, 1);
if (ret)
pr_debug("error removing bus, %x\n", -ret);
}
}
/**
* hotplug_dock_devices - insert or remove devices on the dock station
* @ds: the dock station
* @event: either bus check or eject request
*
* Some devices on the dock station need to have drivers called
* to perform hotplug operations after a dock event has occurred.
* Traverse the list of dock devices that have registered a
* hotplug handler, and call the handler.
*/
static void hotplug_dock_devices(struct dock_station *ds, u32 event)
{
struct dock_dependent_device *dd;
spin_lock(&ds->hp_lock);
/*
* First call driver specific hotplug functions
*/
list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) {
if (dd->handler)
dd->handler(dd->handle, event, dd->context);
}
/*
* Now make sure that an acpi_device is created for each
* dependent device, or removed if this is an eject request.
* This will cause acpi_drivers to be stopped/started if they
* exist
*/
list_for_each_entry(dd, &ds->dependent_devices, list) {
if (event == ACPI_NOTIFY_EJECT_REQUEST)
dock_remove_acpi_device(dd->handle);
else
dock_create_acpi_device(dd->handle);
}
spin_unlock(&ds->hp_lock);
}
static void dock_event(struct dock_station *ds, u32 event, int num)
{
struct acpi_device *device;
device = dock_create_acpi_device(ds->handle);
if (device)
kobject_uevent(&device->kobj, num);
}
/**
* eject_dock - respond to a dock eject request
* @ds: the dock station
*
* This is called after _DCK is called, to execute the dock station's
* _EJ0 method.
*/
static void eject_dock(struct dock_station *ds)
{
struct acpi_object_list arg_list;
union acpi_object arg;
acpi_status status;
acpi_handle tmp;
/* all dock devices should have _EJ0, but check anyway */
status = acpi_get_handle(ds->handle, "_EJ0", &tmp);
if (ACPI_FAILURE(status)) {
pr_debug("No _EJ0 support for dock device\n");
return;
}
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = 1;
if (ACPI_FAILURE(acpi_evaluate_object(ds->handle, "_EJ0",
&arg_list, NULL)))
pr_debug("Failed to evaluate _EJ0!\n");
}
/**
* handle_dock - handle a dock event
* @ds: the dock station
* @dock: to dock, or undock - that is the question
*
* Execute the _DCK method in response to an acpi event
*/
static void handle_dock(struct dock_station *ds, int dock)
{
acpi_status status;
struct acpi_object_list arg_list;
union acpi_object arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
acpi_get_name(ds->handle, ACPI_FULL_PATHNAME, &name_buffer);
obj = name_buffer.pointer;
printk(KERN_INFO PREFIX "%s\n", dock ? "docking" : "undocking");
/* _DCK method has one argument */
arg_list.count = 1;
arg_list.pointer = &arg;
arg.type = ACPI_TYPE_INTEGER;
arg.integer.value = dock;
status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
if (ACPI_FAILURE(status))
pr_debug("%s: failed to execute _DCK\n", obj->string.pointer);
kfree(buffer.pointer);
kfree(name_buffer.pointer);
}
static inline void dock(struct dock_station *ds)
{
handle_dock(ds, 1);
}
static inline void undock(struct dock_station *ds)
{
handle_dock(ds, 0);
}
static inline void begin_dock(struct dock_station *ds)
{
ds->flags |= DOCK_DOCKING;
}
static inline void complete_dock(struct dock_station *ds)
{
ds->flags &= ~(DOCK_DOCKING);
ds->last_dock_time = jiffies;
}
/**
* dock_in_progress - see if we are in the middle of handling a dock event
* @ds: the dock station
*
* Sometimes while docking, false dock events can be sent to the driver
* because good connections aren't made or some other reason. Ignore these
* if we are in the middle of doing something.
*/
static int dock_in_progress(struct dock_station *ds)
{
if ((ds->flags & DOCK_DOCKING) ||
time_before(jiffies, (ds->last_dock_time + HZ)))
return 1;
return 0;
}
/**
* register_dock_notifier - add yourself to the dock notifier list
* @nb: the callers notifier block
*
* If a driver wishes to be notified about dock events, they can
* use this function to put a notifier block on the dock notifier list.
* this notifier call chain will be called after a dock event, but
* before hotplugging any new devices.
*/
int register_dock_notifier(struct notifier_block *nb)
{
return atomic_notifier_chain_register(&dock_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(register_dock_notifier);
/**
* unregister_dock_notifier - remove yourself from the dock notifier list
* @nb: the callers notifier block
*/
void unregister_dock_notifier(struct notifier_block *nb)
{
atomic_notifier_chain_unregister(&dock_notifier_list, nb);
}
EXPORT_SYMBOL_GPL(unregister_dock_notifier);
/**
* register_hotplug_dock_device - register a hotplug function
* @handle: the handle of the device
* @handler: the acpi_notifier_handler to call after docking
* @context: device specific data
*
* If a driver would like to perform a hotplug operation after a dock
* event, they can register an acpi_notifiy_handler to be called by
* the dock driver after _DCK is executed.
*/
int
register_hotplug_dock_device(acpi_handle handle, acpi_notify_handler handler,
void *context)
{
struct dock_dependent_device *dd;
if (!dock_station)
return -ENODEV;
/*
* make sure this handle is for a device dependent on the dock,
* this would include the dock station itself
*/
dd = find_dock_dependent_device(dock_station, handle);
if (dd) {
dd->handler = handler;
dd->context = context;
dock_add_hotplug_device(dock_station, dd);
return 0;
}
return -EINVAL;
}
EXPORT_SYMBOL_GPL(register_hotplug_dock_device);
/**
* unregister_hotplug_dock_device - remove yourself from the hotplug list
* @handle: the acpi handle of the device
*/
void unregister_hotplug_dock_device(acpi_handle handle)
{
struct dock_dependent_device *dd;
if (!dock_station)
return;
dd = find_dock_dependent_device(dock_station, handle);
if (dd)
dock_del_hotplug_device(dock_station, dd);
}
EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
/**
* dock_notify - act upon an acpi dock notification
* @handle: the dock station handle
* @event: the acpi event
* @data: our driver data struct
*
* If we are notified to dock, then check to see if the dock is
* present and then dock. Notify all drivers of the dock event,
* and then hotplug and devices that may need hotplugging. For undock
* check to make sure the dock device is still present, then undock
* and hotremove all the devices that may need removing.
*/
static void dock_notify(acpi_handle handle, u32 event, void *data)
{
struct dock_station *ds = (struct dock_station *)data;
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
if (!dock_in_progress(ds) && dock_present(ds)) {
begin_dock(ds);
dock(ds);
if (!dock_present(ds)) {
printk(KERN_ERR PREFIX "Unable to dock!\n");
break;
}
atomic_notifier_call_chain(&dock_notifier_list,
event, NULL);
hotplug_dock_devices(ds, event);
complete_dock(ds);
dock_event(ds, event, DOCK_EVENT);
}
break;
case ACPI_NOTIFY_DEVICE_CHECK:
/*
* According to acpi spec 3.0a, if a DEVICE_CHECK notification
* is sent and _DCK is present, it is assumed to mean an
* undock request. This notify routine will only be called
* for objects defining _DCK, so we will fall through to eject
* request here. However, we will pass an eject request through
* to the driver who wish to hotplug.
*/
case ACPI_NOTIFY_EJECT_REQUEST:
if (!dock_in_progress(ds) && dock_present(ds)) {
/*
* here we need to generate the undock
* event prior to actually doing the undock
* so that the device struct still exists.
*/
dock_event(ds, event, UNDOCK_EVENT);
hotplug_dock_devices(ds, ACPI_NOTIFY_EJECT_REQUEST);
undock(ds);
eject_dock(ds);
if (dock_present(ds))
printk(KERN_ERR PREFIX "Unable to undock!\n");
}
break;
default:
printk(KERN_ERR PREFIX "Unknown dock event %d\n", event);
}
}
/**
* find_dock_devices - find devices on the dock station
* @handle: the handle of the device we are examining
* @lvl: unused
* @context: the dock station private data
* @rv: unused
*
* This function is called by acpi_walk_namespace. It will
* check to see if an object has an _EJD method. If it does, then it
* will see if it is dependent on the dock station.
*/
static acpi_status
find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv)
{
acpi_status status;
acpi_handle tmp;
struct dock_station *ds = (struct dock_station *)context;
struct dock_dependent_device *dd;
status = acpi_bus_get_ejd(handle, &tmp);
if (ACPI_FAILURE(status))
return AE_OK;
if (tmp == ds->handle) {
dd = alloc_dock_dependent_device(handle);
if (dd)
add_dock_dependent_device(ds, dd);
}
return AE_OK;
}
/**
* dock_add - add a new dock station
* @handle: the dock station handle
*
* allocated and initialize a new dock station device. Find all devices
* that are on the dock station, and register for dock event notifications.
*/
static int dock_add(acpi_handle handle)
{
int ret;
acpi_status status;
struct dock_dependent_device *dd;
/* allocate & initialize the dock_station private data */
dock_station = kzalloc(sizeof(*dock_station), GFP_KERNEL);
if (!dock_station)
return -ENOMEM;
dock_station->handle = handle;
dock_station->last_dock_time = jiffies - HZ;
INIT_LIST_HEAD(&dock_station->dependent_devices);
INIT_LIST_HEAD(&dock_station->hotplug_devices);
spin_lock_init(&dock_station->dd_lock);
spin_lock_init(&dock_station->hp_lock);
/* Find dependent devices */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, find_dock_devices, dock_station,
NULL);
/* add the dock station as a device dependent on itself */
dd = alloc_dock_dependent_device(handle);
if (!dd) {
kfree(dock_station);
return -ENOMEM;
}
add_dock_dependent_device(dock_station, dd);
/* register for dock events */
status = acpi_install_notify_handler(dock_station->handle,
ACPI_SYSTEM_NOTIFY,
dock_notify, dock_station);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "Error installing notify handler\n");
ret = -ENODEV;
goto dock_add_err;
}
printk(KERN_INFO PREFIX "%s \n", ACPI_DOCK_DRIVER_NAME);
return 0;
dock_add_err:
kfree(dock_station);
kfree(dd);
return ret;
}
/**
* dock_remove - free up resources related to the dock station
*/
static int dock_remove(void)
{
struct dock_dependent_device *dd, *tmp;
acpi_status status;
if (!dock_station)
return 0;
/* remove dependent devices */
list_for_each_entry_safe(dd, tmp, &dock_station->dependent_devices,
list)
kfree(dd);
/* remove dock notify handler */
status = acpi_remove_notify_handler(dock_station->handle,
ACPI_SYSTEM_NOTIFY,
dock_notify);
if (ACPI_FAILURE(status))
printk(KERN_ERR "Error removing notify handler\n");
/* free dock station memory */
kfree(dock_station);
return 0;
}
/**
* find_dock - look for a dock station
* @handle: acpi handle of a device
* @lvl: unused
* @context: counter of dock stations found
* @rv: unused
*
* This is called by acpi_walk_namespace to look for dock stations.
*/
static acpi_status
find_dock(acpi_handle handle, u32 lvl, void *context, void **rv)
{
int *count = (int *)context;
acpi_status status = AE_OK;
if (is_dock(handle)) {
if (dock_add(handle) >= 0) {
(*count)++;
status = AE_CTRL_TERMINATE;
}
}
return status;
}
static int __init dock_init(void)
{
int num = 0;
dock_station = NULL;
/* look for a dock station */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, find_dock, &num, NULL);
if (!num)
return -ENODEV;
return 0;
}
static void __exit dock_exit(void)
{
dock_remove();
}
postcore_initcall(dock_init);
module_exit(dock_exit);
drivers/acpi/ec.c
浏览文件 @ 3e8d6ad9
......@@ -207,16 +207,15 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ec_wait");
ec->intr.expect_event = event;
smp_mb();
switch (event) {
case ACPI_EC_EVENT_IBE:
if (~acpi_ec_read_status(ec) & event) {
if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) {
ec->intr.expect_event = 0;
return_VALUE(0);
return 0;
}
break;
default:
......@@ -238,16 +237,16 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
switch (event) {
case ACPI_EC_EVENT_OBF:
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_OBF)
return_VALUE(0);
return 0;
break;
case ACPI_EC_EVENT_IBE:
if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
return_VALUE(0);
return 0;
break;
}
return_VALUE(-ETIME);
return -ETIME;
}
#ifdef ACPI_FUTURE_USAGE
......@@ -260,7 +259,6 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
u32 tmp = 0;
int status = 0;
ACPI_FUNCTION_TRACE("acpi_ec_enter_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
......@@ -272,22 +270,21 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
if (tmp != 0x90) { /* Burst ACK byte */
return_VALUE(-EINVAL);
return -EINVAL;
}
}
atomic_set(&ec->intr.leaving_burst, 0);
return_VALUE(0);
return 0;
end:
printk(KERN_WARNING PREFIX "Error in acpi_ec_wait\n");
return_VALUE(-1);
ACPI_EXCEPTION ((AE_INFO, status, "EC wait, burst mode");
return -1;
}
int acpi_ec_leave_burst_mode(union acpi_ec *ec)
{
int status = 0;
ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
......@@ -298,10 +295,10 @@ int acpi_ec_leave_burst_mode(union acpi_ec *ec)
acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
}
atomic_set(&ec->intr.leaving_burst, 1);
return_VALUE(0);
return 0;
end:
printk(KERN_WARNING PREFIX "leave burst_mode:error\n");
return_VALUE(-1);
ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode");
return -1;
}
#endif /* ACPI_FUTURE_USAGE */
......@@ -325,17 +322,16 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
int result = 0;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
if (down_interruptible(&ec->poll.sem)) {
......@@ -365,7 +361,7 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
......@@ -374,15 +370,14 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
acpi_status status = AE_OK;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
if (down_interruptible(&ec->poll.sem)) {
......@@ -415,7 +410,7 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
......@@ -423,17 +418,16 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
WARN_ON(in_interrupt());
......@@ -467,7 +461,7 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
......@@ -475,15 +469,14 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
WARN_ON(in_interrupt());
......@@ -516,7 +509,7 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
/*
......@@ -574,17 +567,16 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
acpi_status status = AE_OK;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
......@@ -613,23 +605,22 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
{
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
down(&ec->intr.sem);
......@@ -662,7 +653,7 @@ static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
/* --------------------------------------------------------------------------
......@@ -691,13 +682,12 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (!ec_cxt)
goto end;
if (down_interruptible (&ec->poll.sem)) {
return_VOID;
return;
}
acpi_hw_low_level_read(8, &value, &ec->common.command_addr);
up(&ec->poll.sem);
......@@ -734,7 +724,6 @@ static void acpi_ec_gpe_intr_query(void *ec_cxt)
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_SCI)
result = acpi_ec_query(ec, &value);
......@@ -793,12 +782,15 @@ static u32 acpi_ec_gpe_intr_handler(void *data)
case ACPI_EC_EVENT_OBF:
if (!(value & ACPI_EC_FLAG_OBF))
break;
ec->intr.expect_event = 0;
wake_up(&ec->intr.wait);
break;
case ACPI_EC_EVENT_IBE:
if ((value & ACPI_EC_FLAG_IBF))
break;
ec->intr.expect_event = 0;
wake_up(&ec->intr.wait);
return ACPI_INTERRUPT_HANDLED;
break;
default:
break;
}
......@@ -846,15 +838,14 @@ acpi_ec_space_handler(u32 function,
acpi_integer f_v = 0;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_ec_space_handler");
if ((address > 0xFF) || !value || !handler_context)
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
if (bit_width != 8 && acpi_strict) {
printk(KERN_WARNING PREFIX
"acpi_ec_space_handler: bit_width should be 8\n");
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
ec = (union acpi_ec *)handler_context;
......@@ -893,16 +884,16 @@ acpi_ec_space_handler(u32 function,
out:
switch (result) {
case -EINVAL:
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
break;
case -ENODEV:
return_VALUE(AE_NOT_FOUND);
return AE_NOT_FOUND;
break;
case -ETIME:
return_VALUE(AE_TIME);
return AE_TIME;
break;
default:
return_VALUE(AE_OK);
return AE_OK;
}
}
......@@ -916,7 +907,6 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
{
union acpi_ec *ec = (union acpi_ec *)seq->private;
ACPI_FUNCTION_TRACE("acpi_ec_read_info");
if (!ec)
goto end;
......@@ -931,7 +921,7 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
end:
return_VALUE(0);
return 0;
}
static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
......@@ -951,33 +941,29 @@ static int acpi_ec_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ec_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
}
entry = create_proc_entry(ACPI_EC_FILE_INFO, S_IRUGO,
acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Unable to create '%s' fs entry\n",
ACPI_EC_FILE_INFO));
return -ENODEV;
else {
entry->proc_fops = &acpi_ec_info_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_ec_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_ec_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_EC_FILE_INFO, acpi_device_dir(device));
......@@ -985,7 +971,7 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -998,14 +984,13 @@ static int acpi_ec_poll_add(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
......@@ -1038,8 +1023,7 @@ static int acpi_ec_poll_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
&ec->common.gpe_bit);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error obtaining GPE bit assignment\n"));
ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit"));
result = -ENODEV;
goto end;
}
......@@ -1059,7 +1043,7 @@ static int acpi_ec_poll_add(struct acpi_device *device)
if (result)
kfree(ec);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_add(struct acpi_device *device)
{
......@@ -1067,14 +1051,13 @@ static int acpi_ec_intr_add(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
......@@ -1110,8 +1093,7 @@ static int acpi_ec_intr_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
&ec->common.gpe_bit);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error obtaining GPE bit assignment\n"));
printk(KERN_ERR PREFIX "Obtaining GPE bit assignment\n");
result = -ENODEV;
goto end;
}
......@@ -1131,17 +1113,16 @@ static int acpi_ec_intr_add(struct acpi_device *device)
if (result)
kfree(ec);
return_VALUE(result);
return result;
}
static int acpi_ec_remove(struct acpi_device *device, int type)
{
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_remove");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
......@@ -1149,7 +1130,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
kfree(ec);
return_VALUE(0);
return 0;
}
static acpi_status
......@@ -1188,15 +1169,14 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_start");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Get I/O port addresses. Convert to GAS format.
......@@ -1205,9 +1185,8 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_ec_io_ports, ec);
if (ACPI_FAILURE(status)
|| ec->common.command_addr.register_bit_width == 0) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error getting I/O port addresses"));
return_VALUE(-ENODEV);
printk(KERN_ERR PREFIX "Error getting I/O port addresses\n");
return -ENODEV;
}
ec->common.status_addr = ec->common.command_addr;
......@@ -1224,7 +1203,7 @@ static int acpi_ec_start(struct acpi_device *device)
ACPI_GPE_EDGE_TRIGGERED,
&acpi_ec_gpe_handler, ec);
if (ACPI_FAILURE(status)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
acpi_set_gpe_type(NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME);
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
......@@ -1236,10 +1215,10 @@ static int acpi_ec_start(struct acpi_device *device)
if (ACPI_FAILURE(status)) {
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(AE_OK);
return AE_OK;
}
static int acpi_ec_stop(struct acpi_device *device, int type)
......@@ -1247,10 +1226,9 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_stop");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
......@@ -1258,15 +1236,15 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
status =
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static acpi_status __init
......@@ -1536,23 +1514,22 @@ static int __init acpi_ec_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ec_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
if (!acpi_ec_dir)
return_VALUE(-ENODEV);
return -ENODEV;
/* Now register the driver for the EC */
result = acpi_bus_register_driver(&acpi_ec_driver);
if (result < 0) {
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(result);
return result;
}
subsys_initcall(acpi_ec_init);
......@@ -1561,13 +1538,12 @@ subsys_initcall(acpi_ec_init);
#if 0
static void __exit acpi_ec_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_ec_exit");
acpi_bus_unregister_driver(&acpi_ec_driver);
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
return_VOID;
return;
}
#endif /* 0 */
......
drivers/acpi/event.c
浏览文件 @ 3e8d6ad9
......@@ -48,18 +48,17 @@ acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
static int chars_remaining = 0;
static char *ptr;
ACPI_FUNCTION_TRACE("acpi_system_read_event");
if (!chars_remaining) {
memset(&event, 0, sizeof(struct acpi_bus_event));
if ((file->f_flags & O_NONBLOCK)
&& (list_empty(&acpi_bus_event_list)))
return_VALUE(-EAGAIN);
return -EAGAIN;
result = acpi_bus_receive_event(&event);
if (result)
return_VALUE(result);
return result;
chars_remaining = sprintf(str, "%s %s %08x %08x\n",
event.device_class ? event.
......@@ -75,13 +74,13 @@ acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
}
if (copy_to_user(buffer, ptr, count))
return_VALUE(-EFAULT);
return -EFAULT;
*ppos += count;
chars_remaining -= count;
ptr += count;
return_VALUE(count);
return count;
}
static int acpi_system_close_event(struct inode *inode, struct file *file)
......@@ -112,22 +111,18 @@ static int __init acpi_event_init(void)
struct proc_dir_entry *entry;
int error = 0;
ACPI_FUNCTION_TRACE("acpi_event_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
/* 'event' [R] */
entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
if (entry)
entry->proc_fops = &acpi_system_event_ops;
else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' proc fs entry\n",
"event"));
error = -EFAULT;
error = -ENODEV;
}
return_VALUE(error);
return error;
}
subsys_initcall(acpi_event_init);
drivers/acpi/events/evgpe.c
浏览文件 @ 3e8d6ad9
......@@ -382,7 +382,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
u32 status_reg;
u32 enable_reg;
acpi_cpu_flags flags;
acpi_cpu_flags hw_flags;
acpi_native_uint i;
acpi_native_uint j;
......@@ -394,8 +393,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
return (int_status);
}
/* We need to hold the GPE lock now, hardware lock in the loop */
/*
* We need to obtain the GPE lock for both the data structs and registers
* Note: Not necessary to obtain the hardware lock, since the GPE registers
* are owned by the gpe_lock.
*/
flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
/* Examine all GPE blocks attached to this interrupt level */
......@@ -413,8 +415,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
gpe_register_info = &gpe_block->register_info[i];
hw_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
/* Read the Status Register */
status =
......@@ -423,8 +423,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&gpe_register_info->
status_address);
if (ACPI_FAILURE(status)) {
acpi_os_release_lock(acpi_gbl_hardware_lock,
hw_flags);
goto unlock_and_exit;
}
......@@ -435,8 +433,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
&enable_reg,
&gpe_register_info->
enable_address);
acpi_os_release_lock(acpi_gbl_hardware_lock, hw_flags);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
......
drivers/acpi/events/evxface.c
浏览文件 @ 3e8d6ad9
......@@ -414,12 +414,13 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!device) ||
(!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
status = AE_BAD_PARAMETER;
goto exit;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto exit;
}
/* Convert and validate the device handle */
......@@ -427,7 +428,7 @@ acpi_remove_notify_handler(acpi_handle device,
node = acpi_ns_map_handle_to_node(device);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
goto unlock;
}
/* Root Object */
......@@ -441,7 +442,7 @@ acpi_remove_notify_handler(acpi_handle device,
((handler_type & ACPI_DEVICE_NOTIFY) &&
!acpi_gbl_device_notify.handler)) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
goto unlock;
}
/* Make sure all deferred tasks are completed */
......@@ -450,7 +451,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto exit;
}
if (handler_type & ACPI_SYSTEM_NOTIFY) {
......@@ -473,7 +474,7 @@ acpi_remove_notify_handler(acpi_handle device,
if (!acpi_ev_is_notify_object(node)) {
status = AE_TYPE;
goto unlock_and_exit;
goto unlock;
}
/* Check for an existing internal object */
......@@ -481,7 +482,7 @@ acpi_remove_notify_handler(acpi_handle device,
obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
goto unlock;
}
/* Object exists - make sure there's an existing handler */
......@@ -491,7 +492,7 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!notify_obj) ||
(notify_obj->notify.handler != handler)) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
goto unlock;
}
/* Make sure all deferred tasks are completed */
......@@ -499,7 +500,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto exit;
}
/* Remove the handler */
......@@ -512,7 +513,7 @@ acpi_remove_notify_handler(acpi_handle device,
if ((!notify_obj) ||
(notify_obj->notify.handler != handler)) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
goto unlock;
}
/* Make sure all deferred tasks are completed */
......@@ -520,7 +521,7 @@ acpi_remove_notify_handler(acpi_handle device,
acpi_os_wait_events_complete(NULL);
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto exit;
}
/* Remove the handler */
......@@ -529,8 +530,11 @@ acpi_remove_notify_handler(acpi_handle device,
}
}
unlock_and_exit:
unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
exit:
if (ACPI_FAILURE(status))
ACPI_EXCEPTION((AE_INFO, status, "Removing notify handler"));
return_ACPI_STATUS(status);
}
......@@ -568,12 +572,13 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
/* Parameter validation */
if ((!address) || (type > ACPI_GPE_XRUPT_TYPE_MASK)) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
status = AE_BAD_PARAMETER;
goto exit;
}
status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
goto exit;
}
/* Ensure that we have a valid GPE number */
......@@ -581,7 +586,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (!gpe_event_info) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
goto unlock;
}
/* Make sure that there isn't a handler there already */
......@@ -589,7 +594,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
ACPI_GPE_DISPATCH_HANDLER) {
status = AE_ALREADY_EXISTS;
goto unlock_and_exit;
goto unlock;
}
/* Allocate and init handler object */
......@@ -597,7 +602,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
handler = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_handler_info));
if (!handler) {
status = AE_NO_MEMORY;
goto unlock_and_exit;
goto unlock;
}
handler->address = address;
......@@ -608,7 +613,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
status = acpi_ev_disable_gpe(gpe_event_info);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
goto unlock;
}
/* Install the handler */
......@@ -623,8 +628,12 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
unlock_and_exit:
unlock:
(void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
exit:
if (ACPI_FAILURE(status))
ACPI_EXCEPTION((AE_INFO, status,
"Installing notify handler failed"));
return_ACPI_STATUS(status);
}
......
drivers/acpi/executer/exconfig.c
浏览文件 @ 3e8d6ad9
......@@ -266,6 +266,10 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state,
}
}
ACPI_INFO((AE_INFO,
"Dynamic OEM Table Load - [%4.4s] OemId [%6.6s] OemTableId [%8.8s]",
table->signature, table->oem_id, table->oem_table_id));
*return_desc = ddb_handle;
return_ACPI_STATUS(status);
}
......@@ -446,6 +450,10 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
ACPI_INFO((AE_INFO,
"Dynamic SSDT Load - OemId [%6.6s] OemTableId [%8.8s]",
table_ptr->oem_id, table_ptr->oem_table_id));
cleanup:
if (ACPI_FAILURE(status)) {
ACPI_FREE(table_ptr);
......
drivers/acpi/executer/excreate.c
浏览文件 @ 3e8d6ad9
......@@ -177,7 +177,7 @@ acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
* that the event is created in an unsignalled state
*/
status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
&obj_desc->event.semaphore);
&obj_desc->event.os_semaphore);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
......@@ -226,12 +226,9 @@ acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
goto cleanup;
}
/*
* Create the actual OS semaphore.
* One unit max to make it a mutex, with one initial unit to allow
* the mutex to be acquired.
*/
status = acpi_os_create_semaphore(1, 1, &obj_desc->mutex.semaphore);
/* Create the actual OS Mutex */
status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
......@@ -565,7 +562,7 @@ acpi_ex_create_method(u8 * aml_start,
obj_desc->method.aml_length = aml_length;
/*
* Disassemble the method flags. Split off the Arg Count
* Disassemble the method flags. Split off the Arg Count
* for efficiency
*/
method_flags = (u8) operand[1]->integer.value;
......@@ -576,21 +573,19 @@ acpi_ex_create_method(u8 * aml_start,
(u8) (method_flags & AML_METHOD_ARG_COUNT);
/*
* Get the concurrency count. If required, a semaphore will be
* Get the sync_level. If method is serialized, a mutex will be
* created for this method when it is parsed.
*/
if (acpi_gbl_all_methods_serialized) {
obj_desc->method.concurrency = 1;
obj_desc->method.sync_level = 0;
obj_desc->method.method_flags |= AML_METHOD_SERIALIZED;
} else if (method_flags & AML_METHOD_SERIALIZED) {
/*
* ACPI 1.0: Concurrency = 1
* ACPI 2.0: Concurrency = (sync_level (in method declaration) + 1)
* ACPI 1.0: sync_level = 0
* ACPI 2.0: sync_level = sync_level in method declaration
*/
obj_desc->method.concurrency = (u8)
(((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1);
} else {
obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY;
obj_desc->method.sync_level = (u8)
((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4);
}
/* Attach the new object to the method Node */
......
drivers/acpi/executer/exdump.c
浏览文件 @ 3e8d6ad9
......@@ -118,14 +118,14 @@ static struct acpi_exdump_info acpi_ex_dump_device[4] = {
static struct acpi_exdump_info acpi_ex_dump_event[2] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_event), NULL},
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(event.semaphore), "Semaphore"}
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(event.os_semaphore), "OsSemaphore"}
};
static struct acpi_exdump_info acpi_ex_dump_method[8] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_method), NULL},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.param_count), "ParamCount"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.concurrency), "Concurrency"},
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(method.semaphore), "Semaphore"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.sync_level), "Sync Level"},
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(method.mutex), "Mutex"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.owner_id), "Owner Id"},
{ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.thread_count), "Thread Count"},
{ACPI_EXD_UINT32, ACPI_EXD_OFFSET(method.aml_length), "Aml Length"},
......@@ -138,7 +138,7 @@ static struct acpi_exdump_info acpi_ex_dump_mutex[5] = {
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.owner_thread), "Owner Thread"},
{ACPI_EXD_UINT16, ACPI_EXD_OFFSET(mutex.acquisition_depth),
"Acquire Depth"},
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.semaphore), "Semaphore"}
{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(mutex.os_mutex), "OsMutex"}
};
static struct acpi_exdump_info acpi_ex_dump_region[7] = {
......
drivers/acpi/executer/exfldio.c
浏览文件 @ 3e8d6ad9
......@@ -727,11 +727,23 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
/* Merge with previous datum if necessary */
merged_datum |= raw_datum <<
(obj_desc->common_field.access_bit_width -
obj_desc->common_field.start_field_bit_offset);
/*
* Merge with previous datum if necessary.
*
* Note: Before the shift, check if the shift value will be larger than
* the integer size. If so, there is no need to perform the operation.
* This avoids the differences in behavior between different compilers
* concerning shift values larger than the target data width.
*/
if ((obj_desc->common_field.access_bit_width -
obj_desc->common_field.start_field_bit_offset) <
ACPI_INTEGER_BIT_SIZE) {
merged_datum |=
raw_datum << (obj_desc->common_field.
access_bit_width -
obj_desc->common_field.
start_field_bit_offset);
}
if (i == datum_count) {
break;
......@@ -808,13 +820,23 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
}
/* Compute the number of datums (access width data items) */
/*
* Create the bitmasks used for bit insertion.
* Note: This if/else is used to bypass compiler differences with the
* shift operator
*/
if (obj_desc->common_field.access_bit_width == ACPI_INTEGER_BIT_SIZE) {
width_mask = ACPI_INTEGER_MAX;
} else {
width_mask =
ACPI_MASK_BITS_ABOVE(obj_desc->common_field.
access_bit_width);
}
width_mask =
ACPI_MASK_BITS_ABOVE(obj_desc->common_field.access_bit_width);
mask =
width_mask & ACPI_MASK_BITS_BELOW(obj_desc->common_field.
start_field_bit_offset);
mask = width_mask &
ACPI_MASK_BITS_BELOW(obj_desc->common_field.start_field_bit_offset);
/* Compute the number of datums (access width data items) */
datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
obj_desc->common_field.access_bit_width);
......@@ -848,12 +870,29 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
return_ACPI_STATUS(status);
}
/* Start new output datum by merging with previous input datum */
field_offset += obj_desc->common_field.access_byte_width;
merged_datum = raw_datum >>
(obj_desc->common_field.access_bit_width -
obj_desc->common_field.start_field_bit_offset);
/*
* Start new output datum by merging with previous input datum
* if necessary.
*
* Note: Before the shift, check if the shift value will be larger than
* the integer size. If so, there is no need to perform the operation.
* This avoids the differences in behavior between different compilers
* concerning shift values larger than the target data width.
*/
if ((obj_desc->common_field.access_bit_width -
obj_desc->common_field.start_field_bit_offset) <
ACPI_INTEGER_BIT_SIZE) {
merged_datum =
raw_datum >> (obj_desc->common_field.
access_bit_width -
obj_desc->common_field.
start_field_bit_offset);
} else {
merged_datum = 0;
}
mask = width_mask;
if (i == datum_count) {
......
drivers/acpi/executer/exmutex.c
浏览文件 @ 3e8d6ad9
......@@ -161,12 +161,13 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
/*
* Current Sync must be less than or equal to the sync level of the
* mutex. This mechanism provides some deadlock prevention
* mutex. This mechanism provides some deadlock prevention
*/
if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
ACPI_ERROR((AE_INFO,
"Cannot acquire Mutex [%4.4s], incorrect SyncLevel",
acpi_ut_get_node_name(obj_desc->mutex.node)));
"Cannot acquire Mutex [%4.4s], current SyncLevel is too large (%d)",
acpi_ut_get_node_name(obj_desc->mutex.node),
walk_state->thread->current_sync_level));
return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
}
......@@ -178,8 +179,7 @@ acpi_ex_acquire_mutex(union acpi_operand_object *time_desc,
if ((obj_desc->mutex.owner_thread->thread_id ==
walk_state->thread->thread_id) ||
(obj_desc->mutex.semaphore ==
acpi_gbl_global_lock_semaphore)) {
(obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK)) {
/*
* The mutex is already owned by this thread,
* just increment the acquisition depth
......@@ -264,7 +264,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
*/
if ((obj_desc->mutex.owner_thread->thread_id !=
walk_state->thread->thread_id)
&& (obj_desc->mutex.semaphore != acpi_gbl_global_lock_semaphore)) {
&& (obj_desc->mutex.os_mutex != ACPI_GLOBAL_LOCK)) {
ACPI_ERROR((AE_INFO,
"Thread %X cannot release Mutex [%4.4s] acquired by thread %X",
walk_state->thread->thread_id,
......
drivers/acpi/executer/exsystem.c
浏览文件 @ 3e8d6ad9
......@@ -63,14 +63,14 @@ ACPI_MODULE_NAME("exsystem")
* interpreter is released.
*
******************************************************************************/
acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout)
{
acpi_status status;
acpi_status status2;
ACPI_FUNCTION_TRACE(ex_system_wait_semaphore);
status = acpi_os_wait_semaphore(semaphore, 1, 0);
status = acpi_os_wait_semaphore(semaphore, 1, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
......@@ -101,6 +101,59 @@ acpi_status acpi_ex_system_wait_semaphore(acpi_handle semaphore, u16 timeout)
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_wait_mutex
*
* PARAMETERS: Mutex - Mutex to wait on
* Timeout - Max time to wait
*
* RETURN: Status
*
* DESCRIPTION: Implements a semaphore wait with a check to see if the
* semaphore is available immediately. If it is not, the
* interpreter is released.
*
******************************************************************************/
acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout)
{
acpi_status status;
acpi_status status2;
ACPI_FUNCTION_TRACE(ex_system_wait_mutex);
status = acpi_os_acquire_mutex(mutex, ACPI_DO_NOT_WAIT);
if (ACPI_SUCCESS(status)) {
return_ACPI_STATUS(status);
}
if (status == AE_TIME) {
/* We must wait, so unlock the interpreter */
acpi_ex_exit_interpreter();
status = acpi_os_acquire_mutex(mutex, timeout);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"*** Thread awake after blocking, %s\n",
acpi_format_exception(status)));
/* Reacquire the interpreter */
status2 = acpi_ex_enter_interpreter();
if (ACPI_FAILURE(status2)) {
/* Report fatal error, could not acquire interpreter */
return_ACPI_STATUS(status2);
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_system_do_stall
......@@ -176,7 +229,7 @@ acpi_status acpi_ex_system_do_suspend(acpi_integer how_long)
*
* FUNCTION: acpi_ex_system_acquire_mutex
*
* PARAMETERS: time_desc - The 'time to delay' object descriptor
* PARAMETERS: time_desc - Maximum time to wait for the mutex
* obj_desc - The object descriptor for this op
*
* RETURN: Status
......@@ -201,14 +254,14 @@ acpi_ex_system_acquire_mutex(union acpi_operand_object * time_desc,
/* Support for the _GL_ Mutex object -- go get the global lock */
if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
status =
acpi_ev_acquire_global_lock((u16) time_desc->integer.value);
return_ACPI_STATUS(status);
}
status = acpi_ex_system_wait_semaphore(obj_desc->mutex.semaphore,
(u16) time_desc->integer.value);
status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
(u16) time_desc->integer.value);
return_ACPI_STATUS(status);
}
......@@ -239,13 +292,13 @@ acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc)
/* Support for the _GL_ Mutex object -- release the global lock */
if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) {
if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) {
status = acpi_ev_release_global_lock();
return_ACPI_STATUS(status);
}
status = acpi_os_signal_semaphore(obj_desc->mutex.semaphore, 1);
return_ACPI_STATUS(status);
acpi_os_release_mutex(obj_desc->mutex.os_mutex);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
......@@ -268,7 +321,8 @@ acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc)
ACPI_FUNCTION_TRACE(ex_system_signal_event);
if (obj_desc) {
status = acpi_os_signal_semaphore(obj_desc->event.semaphore, 1);
status =
acpi_os_signal_semaphore(obj_desc->event.os_semaphore, 1);
}
return_ACPI_STATUS(status);
......@@ -299,7 +353,7 @@ acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
if (obj_desc) {
status =
acpi_ex_system_wait_semaphore(obj_desc->event.semaphore,
acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore,
(u16) time_desc->integer.
value);
}
......@@ -322,7 +376,7 @@ acpi_ex_system_wait_event(union acpi_operand_object *time_desc,
acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
{
acpi_status status = AE_OK;
void *temp_semaphore;
acpi_semaphore temp_semaphore;
ACPI_FUNCTION_ENTRY();
......@@ -333,8 +387,8 @@ acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc)
status =
acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore);
if (ACPI_SUCCESS(status)) {
(void)acpi_os_delete_semaphore(obj_desc->event.semaphore);
obj_desc->event.semaphore = temp_semaphore;
(void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore);
obj_desc->event.os_semaphore = temp_semaphore;
}
return (status);
......
drivers/acpi/fan.c
浏览文件 @ 3e8d6ad9
......@@ -78,7 +78,6 @@ static int acpi_fan_read_state(struct seq_file *seq, void *offset)
struct acpi_fan *fan = seq->private;
int state = 0;
ACPI_FUNCTION_TRACE("acpi_fan_read_state");
if (fan) {
if (acpi_bus_get_power(fan->handle, &state))
......@@ -87,7 +86,7 @@ static int acpi_fan_read_state(struct seq_file *seq, void *offset)
seq_printf(seq, "status: %s\n",
!state ? "on" : "off");
}
return_VALUE(0);
return 0;
}
static int acpi_fan_state_open_fs(struct inode *inode, struct file *file)
......@@ -104,22 +103,21 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
struct acpi_fan *fan = (struct acpi_fan *)m->private;
char state_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_fan_write_state");
if (!fan || (count > sizeof(state_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
state_string[count] = '\0';
result = acpi_bus_set_power(fan->handle,
simple_strtoul(state_string, NULL, 0));
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
static struct file_operations acpi_fan_state_ops = {
......@@ -135,16 +133,15 @@ static int acpi_fan_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_fan_add_fs");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_fan_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
......@@ -153,21 +150,18 @@ static int acpi_fan_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Unable to create '%s' fs entry\n",
ACPI_FAN_FILE_STATE));
return -ENODEV;
else {
entry->proc_fops = &acpi_fan_state_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_fan_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_fan_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_FAN_FILE_STATE, acpi_device_dir(device));
......@@ -175,7 +169,7 @@ static int acpi_fan_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
......@@ -188,14 +182,13 @@ static int acpi_fan_add(struct acpi_device *device)
struct acpi_fan *fan = NULL;
int state = 0;
ACPI_FUNCTION_TRACE("acpi_fan_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
if (!fan)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(fan, 0, sizeof(struct acpi_fan));
fan->handle = device->handle;
......@@ -205,8 +198,7 @@ static int acpi_fan_add(struct acpi_device *device)
result = acpi_bus_get_power(fan->handle, &state);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error reading power state\n"));
printk(KERN_ERR PREFIX "Reading power state\n");
goto end;
}
......@@ -226,17 +218,16 @@ static int acpi_fan_add(struct acpi_device *device)
if (result)
kfree(fan);
return_VALUE(result);
return result;
}
static int acpi_fan_remove(struct acpi_device *device, int type)
{
struct acpi_fan *fan = NULL;
ACPI_FUNCTION_TRACE("acpi_fan_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
fan = (struct acpi_fan *)acpi_driver_data(device);
......@@ -244,7 +235,7 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
kfree(fan);
return_VALUE(0);
return 0;
}
static int acpi_fan_suspend(struct acpi_device *device, int state)
......@@ -283,31 +274,29 @@ static int __init acpi_fan_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_fan_init");
acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
if (!acpi_fan_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_fan_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_fan_driver);
if (result < 0) {
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_fan_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_fan_exit");
acpi_bus_unregister_driver(&acpi_fan_driver);
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_fan_init);
......
drivers/acpi/hardware/hwregs.c
浏览文件 @ 3e8d6ad9
......@@ -172,9 +172,9 @@ acpi_get_sleep_type_data(u8 sleep_state, u8 * sleep_type_a, u8 * sleep_type_b)
}
/*
* The package must have at least two elements. NOTE (March 2005): This
* The package must have at least two elements. NOTE (March 2005): This
* goes against the current ACPI spec which defines this object as a
* package with one encoded DWORD element. However, existing practice
* package with one encoded DWORD element. However, existing practice
* by BIOS vendors seems to be to have 2 or more elements, at least
* one per sleep type (A/B).
*/
......@@ -255,7 +255,7 @@ struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
* return_value - Value that was read from the register
* Flags - Lock the hardware or not
*
* RETURN: Status and the value read from specified Register. Value
* RETURN: Status and the value read from specified Register. Value
* returned is normalized to bit0 (is shifted all the way right)
*
* DESCRIPTION: ACPI bit_register read function.
......@@ -361,8 +361,8 @@ acpi_status acpi_set_register(u32 register_id, u32 value, u32 flags)
case ACPI_REGISTER_PM1_STATUS:
/*
* Status Registers are different from the rest. Clear by
* writing 1, and writing 0 has no effect. So, the only relevant
* Status Registers are different from the rest. Clear by
* writing 1, and writing 0 has no effect. So, the only relevant
* information is the single bit we're interested in, all others should
* be written as 0 so they will be left unchanged.
*/
......@@ -467,14 +467,13 @@ ACPI_EXPORT_SYMBOL(acpi_set_register)
*
* FUNCTION: acpi_hw_register_read
*
* PARAMETERS: use_lock - Mutex hw access
* register_id - register_iD + Offset
* PARAMETERS: use_lock - Lock hardware? True/False
* register_id - ACPI Register ID
* return_value - Where the register value is returned
*
* RETURN: Status and the value read.
*
* DESCRIPTION: Acpi register read function. Registers are read at the
* given offset.
* DESCRIPTION: Read from the specified ACPI register
*
******************************************************************************/
acpi_status
......@@ -580,14 +579,26 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value)
*
* FUNCTION: acpi_hw_register_write
*
* PARAMETERS: use_lock - Mutex hw access
* register_id - register_iD + Offset
* PARAMETERS: use_lock - Lock hardware? True/False
* register_id - ACPI Register ID
* Value - The value to write
*
* RETURN: Status
*
* DESCRIPTION: Acpi register Write function. Registers are written at the
* given offset.
* DESCRIPTION: Write to the specified ACPI register
*
* NOTE: In accordance with the ACPI specification, this function automatically
* preserves the value of the following bits, meaning that these bits cannot be
* changed via this interface:
*
* PM1_CONTROL[0] = SCI_EN
* PM1_CONTROL[9]
* PM1_STATUS[11]
*
* ACPI References:
* 1) Hardware Ignored Bits: When software writes to a register with ignored
* bit fields, it preserves the ignored bit fields
* 2) SCI_EN: OSPM always preserves this bit position
*
******************************************************************************/
......@@ -595,6 +606,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
{
acpi_status status;
acpi_cpu_flags lock_flags = 0;
u32 read_value;
ACPI_FUNCTION_TRACE(hw_register_write);
......@@ -605,6 +617,22 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
switch (register_id) {
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
/* Perform a read first to preserve certain bits (per ACPI spec) */
status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
ACPI_REGISTER_PM1_STATUS,
&read_value);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/* Insert the bits to be preserved */
ACPI_INSERT_BITS(value, ACPI_PM1_STATUS_PRESERVED_BITS,
read_value);
/* Now we can write the data */
status =
acpi_hw_low_level_write(16, value,
&acpi_gbl_FADT->xpm1a_evt_blk);
......@@ -635,6 +663,25 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value)
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
/*
* Perform a read first to preserve certain bits (per ACPI spec)
*
* Note: This includes SCI_EN, we never want to change this bit
*/
status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK,
ACPI_REGISTER_PM1_CONTROL,
&read_value);
if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/* Insert the bits to be preserved */
ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS,
read_value);
/* Now we can write the data */
status =
acpi_hw_low_level_write(16, value,
&acpi_gbl_FADT->xpm1a_cnt_blk);
......@@ -726,7 +773,7 @@ acpi_hw_low_level_read(u32 width, u32 * value, struct acpi_generic_address *reg)
return (AE_OK);
}
/* Get a local copy of the address. Handles possible alignment issues */
/* Get a local copy of the address. Handles possible alignment issues */
ACPI_MOVE_64_TO_64(&address, &reg->address);
if (!address) {
......@@ -798,7 +845,7 @@ acpi_hw_low_level_write(u32 width, u32 value, struct acpi_generic_address * reg)
return (AE_OK);
}
/* Get a local copy of the address. Handles possible alignment issues */
/* Get a local copy of the address. Handles possible alignment issues */
ACPI_MOVE_64_TO_64(&address, &reg->address);
if (!address) {
......
drivers/acpi/hotkey.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/motherboard.c
浏览文件 @ 3e8d6ad9
......@@ -52,13 +52,12 @@ static acpi_status acpi_reserve_io_ranges(struct acpi_resource *res, void *data)
{
struct resource *requested_res = NULL;
ACPI_FUNCTION_TRACE("acpi_reserve_io_ranges");
if (res->type == ACPI_RESOURCE_TYPE_IO) {
struct acpi_resource_io *io_res = &res->data.io;
if (io_res->minimum != io_res->maximum)
return_VALUE(AE_OK);
return AE_OK;
if (IS_RESERVED_ADDR
(io_res->minimum, io_res->address_length)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
......@@ -92,7 +91,7 @@ static acpi_status acpi_reserve_io_ranges(struct acpi_resource *res, void *data)
if (requested_res)
requested_res->flags &= ~IORESOURCE_BUSY;
return_VALUE(AE_OK);
return AE_OK;
}
static int acpi_motherboard_add(struct acpi_device *device)
......
drivers/acpi/namespace/nsaccess.c
浏览文件 @ 3e8d6ad9
......@@ -196,33 +196,30 @@ acpi_status acpi_ns_root_initialize(void)
(u8) (ACPI_TO_INTEGER(val) - 1);
if (ACPI_STRCMP(init_val->name, "_GL_") == 0) {
/*
* Create a counting semaphore for the
* global lock
*/
/* Create a counting semaphore for the global lock */
status =
acpi_os_create_semaphore
(ACPI_NO_UNIT_LIMIT, 1,
&obj_desc->mutex.semaphore);
&acpi_gbl_global_lock_semaphore);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
goto unlock_and_exit;
}
/*
* We just created the mutex for the
* global lock, save it
*/
acpi_gbl_global_lock_semaphore =
obj_desc->mutex.semaphore;
/* Mark this mutex as very special */
obj_desc->mutex.os_mutex =
ACPI_GLOBAL_LOCK;
} else {
/* Create a mutex */
status = acpi_os_create_semaphore(1, 1,
&obj_desc->
mutex.
semaphore);
status =
acpi_os_create_mutex(&obj_desc->
mutex.
os_mutex);
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference
(obj_desc);
......
drivers/acpi/osl.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/parser/psparse.c
浏览文件 @ 3e8d6ad9
......@@ -469,6 +469,16 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
}
walk_state->thread = thread;
/*
* If executing a method, the starting sync_level is this method's
* sync_level
*/
if (walk_state->method_desc) {
walk_state->thread->current_sync_level =
walk_state->method_desc->method.sync_level;
}
acpi_ds_push_walk_state(walk_state, thread);
/*
......@@ -505,6 +515,10 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
status =
acpi_ds_call_control_method(thread, walk_state,
NULL);
if (ACPI_FAILURE(status)) {
status =
acpi_ds_method_error(status, walk_state);
}
/*
* If the transfer to the new method method call worked, a new walk
......@@ -525,7 +539,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
/* Check for possible multi-thread reentrancy problem */
if ((status == AE_ALREADY_EXISTS) &&
(!walk_state->method_desc->method.semaphore)) {
(!walk_state->method_desc->method.mutex)) {
/*
* Method tried to create an object twice. The probable cause is
* that the method cannot handle reentrancy.
......@@ -537,7 +551,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
*/
walk_state->method_desc->method.method_flags |=
AML_METHOD_SERIALIZED;
walk_state->method_desc->method.concurrency = 1;
walk_state->method_desc->method.sync_level = 0;
}
}
......
drivers/acpi/pci_bind.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/pci_irq.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/pci_link.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/pci_root.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/power.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/processor_core.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/processor_idle.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/processor_perflib.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/processor_thermal.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/processor_throttling.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/scan.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/system.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/thermal.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/utilities/utdelete.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/utilities/utglobal.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/utilities/utmisc.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/utilities/utmutex.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/utils.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/acpi/video.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
drivers/pci/hotplug/Makefile
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drivers/pci/hotplug/acpiphp.h
浏览文件 @ 3e8d6ad9
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drivers/pci/hotplug/acpiphp_core.c
浏览文件 @ 3e8d6ad9
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drivers/pci/hotplug/acpiphp_dock.c 已删除 100644 → 0
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drivers/pci/hotplug/acpiphp_glue.c
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include/acpi/acconfig.h
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include/acpi/acdispat.h
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include/acpi/acglobal.h
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include/acpi/acinterp.h
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include/acpi/aclocal.h
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include/acpi/acmacros.h
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include/acpi/acobject.h
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include/acpi/acpi_bus.h
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include/acpi/acpi_drivers.h
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include/acpi/acpiosxf.h
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include/acpi/actypes.h
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include/acpi/platform/aclinux.h
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include/acpi/processor.h
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include/linux/cpufreq.h
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include/linux/kobject.h
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lib/kobject_uevent.c
浏览文件 @ 3e8d6ad9
此差异已折叠。
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