提交 a8251096 编写于 作者: L Linus Torvalds

Merge branch 'modules' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

* 'modules' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  module: drop the lock while waiting for module to complete initialization.
  MODULE_DEVICE_TABLE(isapnp, ...) does nothing
  hisax_fcpcipnp: fix broken isapnp device table.
  isapnp: move definitions to mod_devicetable.h so file2alias can reach them.
...@@ -74,9 +74,10 @@ static struct pnp_device_id fcpnp_ids[] __devinitdata = { ...@@ -74,9 +74,10 @@ static struct pnp_device_id fcpnp_ids[] __devinitdata = {
.id = "AVM0900", .id = "AVM0900",
.driver_data = (unsigned long) "Fritz!Card PnP", .driver_data = (unsigned long) "Fritz!Card PnP",
}, },
{ .id = "" }
}; };
MODULE_DEVICE_TABLE(isapnp, fcpnp_ids); MODULE_DEVICE_TABLE(pnp, fcpnp_ids);
#endif #endif
static int protocol = 2; /* EURO-ISDN Default */ static int protocol = 2; /* EURO-ISDN Default */
......
...@@ -43,10 +43,10 @@ ...@@ -43,10 +43,10 @@
*/ */
#ifdef __KERNEL__ #ifdef __KERNEL__
#include <linux/mod_devicetable.h>
#define DEVICE_COUNT_COMPATIBLE 4 #define DEVICE_COUNT_COMPATIBLE 4
#define ISAPNP_ANY_ID 0xffff
#define ISAPNP_CARD_DEVS 8 #define ISAPNP_CARD_DEVS 8
#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \ #define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
...@@ -74,12 +74,6 @@ struct isapnp_card_id { ...@@ -74,12 +74,6 @@ struct isapnp_card_id {
#define ISAPNP_DEVICE_SINGLE_END \ #define ISAPNP_DEVICE_SINGLE_END \
.card_vendor = 0, .card_device = 0 .card_vendor = 0, .card_device = 0
struct isapnp_device_id {
unsigned short card_vendor, card_device;
unsigned short vendor, function;
unsigned long driver_data; /* data private to the driver */
};
#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE)) #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
#define __ISAPNP__ #define __ISAPNP__
......
...@@ -509,4 +509,11 @@ struct zorro_device_id { ...@@ -509,4 +509,11 @@ struct zorro_device_id {
#define ZORRO_DEVICE_MODALIAS_FMT "zorro:i%08X" #define ZORRO_DEVICE_MODALIAS_FMT "zorro:i%08X"
#define ISAPNP_ANY_ID 0xffff
struct isapnp_device_id {
unsigned short card_vendor, card_device;
unsigned short vendor, function;
kernel_ulong_t driver_data; /* data private to the driver */
};
#endif /* LINUX_MOD_DEVICETABLE_H */ #endif /* LINUX_MOD_DEVICETABLE_H */
...@@ -565,33 +565,26 @@ int use_module(struct module *a, struct module *b) ...@@ -565,33 +565,26 @@ int use_module(struct module *a, struct module *b)
struct module_use *use; struct module_use *use;
int no_warn, err; int no_warn, err;
if (b == NULL || already_uses(a, b)) return 1; if (b == NULL || already_uses(a, b))
/* If we're interrupted or time out, we fail. */
if (wait_event_interruptible_timeout(
module_wq, (err = strong_try_module_get(b)) != -EBUSY,
30 * HZ) <= 0) {
printk("%s: gave up waiting for init of module %s.\n",
a->name, b->name);
return 0; return 0;
}
/* If strong_try_module_get() returned a different error, we fail. */ /* If we're interrupted or time out, we fail. */
err = strong_try_module_get(b);
if (err) if (err)
return 0; return err;
DEBUGP("Allocating new usage for %s.\n", a->name); DEBUGP("Allocating new usage for %s.\n", a->name);
use = kmalloc(sizeof(*use), GFP_ATOMIC); use = kmalloc(sizeof(*use), GFP_ATOMIC);
if (!use) { if (!use) {
printk("%s: out of memory loading\n", a->name); printk("%s: out of memory loading\n", a->name);
module_put(b); module_put(b);
return 0; return -ENOMEM;
} }
use->module_which_uses = a; use->module_which_uses = a;
list_add(&use->list, &b->modules_which_use_me); list_add(&use->list, &b->modules_which_use_me);
no_warn = sysfs_create_link(b->holders_dir, &a->mkobj.kobj, a->name); no_warn = sysfs_create_link(b->holders_dir, &a->mkobj.kobj, a->name);
return 1; return 0;
} }
EXPORT_SYMBOL_GPL(use_module); EXPORT_SYMBOL_GPL(use_module);
...@@ -884,7 +877,7 @@ static inline void module_unload_free(struct module *mod) ...@@ -884,7 +877,7 @@ static inline void module_unload_free(struct module *mod)
int use_module(struct module *a, struct module *b) int use_module(struct module *a, struct module *b)
{ {
return strong_try_module_get(b) == 0; return strong_try_module_get(b);
} }
EXPORT_SYMBOL_GPL(use_module); EXPORT_SYMBOL_GPL(use_module);
...@@ -1055,17 +1048,39 @@ static const struct kernel_symbol *resolve_symbol(Elf_Shdr *sechdrs, ...@@ -1055,17 +1048,39 @@ static const struct kernel_symbol *resolve_symbol(Elf_Shdr *sechdrs,
struct module *owner; struct module *owner;
const struct kernel_symbol *sym; const struct kernel_symbol *sym;
const unsigned long *crc; const unsigned long *crc;
DEFINE_WAIT(wait);
int err;
long timeleft = 30 * HZ;
again:
sym = find_symbol(name, &owner, &crc, sym = find_symbol(name, &owner, &crc,
!(mod->taints & (1 << TAINT_PROPRIETARY_MODULE)), true); !(mod->taints & (1 << TAINT_PROPRIETARY_MODULE)), true);
/* use_module can fail due to OOM, if (!sym)
or module initialization or unloading */ return NULL;
if (sym) {
if (!check_version(sechdrs, versindex, name, mod, crc, owner) if (!check_version(sechdrs, versindex, name, mod, crc, owner))
|| !use_module(mod, owner)) return NULL;
sym = NULL;
} prepare_to_wait(&module_wq, &wait, TASK_INTERRUPTIBLE);
return sym; err = use_module(mod, owner);
if (likely(!err) || err != -EBUSY || signal_pending(current)) {
finish_wait(&module_wq, &wait);
return err ? NULL : sym;
}
/* Module is still loading. Drop lock and wait. */
mutex_unlock(&module_mutex);
timeleft = schedule_timeout(timeleft);
mutex_lock(&module_mutex);
finish_wait(&module_wq, &wait);
/* Module might be gone entirely, or replaced. Re-lookup. */
if (timeleft)
goto again;
printk(KERN_WARNING "%s: gave up waiting for init of module %s.\n",
mod->name, owner->name);
return NULL;
} }
/* /*
......
...@@ -828,6 +828,19 @@ static int do_zorro_entry(const char *filename, struct zorro_device_id *id, ...@@ -828,6 +828,19 @@ static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
return 1; return 1;
} }
/* looks like: "pnp:dD" */
static int do_isapnp_entry(const char *filename,
struct isapnp_device_id *id, char *alias)
{
sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
'A' + ((id->vendor >> 2) & 0x3f) - 1,
'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
'A' + ((id->vendor >> 8) & 0x1f) - 1,
(id->function >> 4) & 0x0f, id->function & 0x0f,
(id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
return 1;
}
/* Ignore any prefix, eg. some architectures prepend _ */ /* Ignore any prefix, eg. some architectures prepend _ */
static inline int sym_is(const char *symbol, const char *name) static inline int sym_is(const char *symbol, const char *name)
{ {
...@@ -983,6 +996,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, ...@@ -983,6 +996,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
do_table(symval, sym->st_size, do_table(symval, sym->st_size,
sizeof(struct zorro_device_id), "zorro", sizeof(struct zorro_device_id), "zorro",
do_zorro_entry, mod); do_zorro_entry, mod);
else if (sym_is(symname, "__mod_isapnp_device_table"))
do_table(symval, sym->st_size,
sizeof(struct isapnp_device_id), "isa",
do_isapnp_entry, mod);
free(zeros); free(zeros);
} }
......
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