提交 686c4cbb 编写于 作者: L Linus Torvalds

Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Add missing syscore_suspend() and syscore_resume() calls
  PM: Fix error code paths executed after failing syscore_suspend()
......@@ -228,6 +228,7 @@
#include <linux/kthread.h>
#include <linux/jiffies.h>
#include <linux/acpi.h>
#include <linux/syscore_ops.h>
#include <asm/system.h>
#include <asm/uaccess.h>
......@@ -1238,6 +1239,7 @@ static int suspend(int vetoable)
local_irq_disable();
sysdev_suspend(PMSG_SUSPEND);
syscore_suspend();
local_irq_enable();
......@@ -1255,6 +1257,7 @@ static int suspend(int vetoable)
apm_error("suspend", err);
err = (err == APM_SUCCESS) ? 0 : -EIO;
syscore_resume();
sysdev_resume();
local_irq_enable();
......@@ -1280,6 +1283,7 @@ static void standby(void)
local_irq_disable();
sysdev_suspend(PMSG_SUSPEND);
syscore_suspend();
local_irq_enable();
err = set_system_power_state(APM_STATE_STANDBY);
......@@ -1287,6 +1291,7 @@ static void standby(void)
apm_error("standby", err);
local_irq_disable();
syscore_resume();
sysdev_resume();
local_irq_enable();
......
......@@ -73,6 +73,7 @@ int syscore_suspend(void)
return ret;
}
EXPORT_SYMBOL_GPL(syscore_suspend);
/**
* syscore_resume - Execute all the registered system core resume callbacks.
......@@ -95,6 +96,7 @@ void syscore_resume(void)
"Interrupts enabled after %pF\n", ops->resume);
}
}
EXPORT_SYMBOL_GPL(syscore_resume);
#endif /* CONFIG_PM_SLEEP */
/**
......
......@@ -8,6 +8,7 @@
#include <linux/sysrq.h>
#include <linux/stop_machine.h>
#include <linux/freezer.h>
#include <linux/syscore_ops.h>
#include <xen/xen.h>
#include <xen/xenbus.h>
......@@ -70,8 +71,13 @@ static int xen_suspend(void *data)
BUG_ON(!irqs_disabled());
err = sysdev_suspend(PMSG_FREEZE);
if (!err) {
err = syscore_suspend();
if (err)
sysdev_resume();
}
if (err) {
printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",
printk(KERN_ERR "xen_suspend: system core suspend failed: %d\n",
err);
return err;
}
......@@ -95,6 +101,7 @@ static int xen_suspend(void *data)
xen_timer_resume();
}
syscore_resume();
sysdev_resume();
return 0;
......
......@@ -33,6 +33,7 @@
#include <linux/vmalloc.h>
#include <linux/swap.h>
#include <linux/kmsg_dump.h>
#include <linux/syscore_ops.h>
#include <asm/page.h>
#include <asm/uaccess.h>
......@@ -1532,6 +1533,11 @@ int kernel_kexec(void)
local_irq_disable();
/* Suspend system devices */
error = sysdev_suspend(PMSG_FREEZE);
if (!error) {
error = syscore_suspend();
if (error)
sysdev_resume();
}
if (error)
goto Enable_irqs;
} else
......@@ -1546,6 +1552,7 @@ int kernel_kexec(void)
#ifdef CONFIG_KEXEC_JUMP
if (kexec_image->preserve_context) {
syscore_resume();
sysdev_resume();
Enable_irqs:
local_irq_enable();
......
......@@ -273,8 +273,11 @@ static int create_image(int platform_mode)
local_irq_disable();
error = sysdev_suspend(PMSG_FREEZE);
if (!error)
if (!error) {
error = syscore_suspend();
if (error)
sysdev_resume();
}
if (error) {
printk(KERN_ERR "PM: Some system devices failed to power down, "
"aborting hibernation\n");
......@@ -407,8 +410,11 @@ static int resume_target_kernel(bool platform_mode)
local_irq_disable();
error = sysdev_suspend(PMSG_QUIESCE);
if (!error)
if (!error) {
error = syscore_suspend();
if (error)
sysdev_resume();
}
if (error)
goto Enable_irqs;
......
......@@ -164,8 +164,11 @@ static int suspend_enter(suspend_state_t state)
BUG_ON(!irqs_disabled());
error = sysdev_suspend(PMSG_SUSPEND);
if (!error)
if (!error) {
error = syscore_suspend();
if (error)
sysdev_resume();
}
if (!error) {
if (!(suspend_test(TEST_CORE) || pm_wakeup_pending())) {
error = suspend_ops->enter(state);
......
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