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| author | Shaohua Li <shaohua.li@intel.com> | 2009-04-07 10:24:29 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-04-07 00:02:40 -0400 |
| commit | 9090589d87506c578ea1523ffd7ae7fd9424fb28 (patch) | |
| tree | 215163d13dbfa514a4121594cd4c6e27fde9b911 /drivers/acpi/sleep.h | |
| parent | d508afb437daee7cf07da085b635c44a4ebf9b38 (diff) | |
| download | linux-9090589d87506c578ea1523ffd7ae7fd9424fb28.tar.gz linux-9090589d87506c578ea1523ffd7ae7fd9424fb28.tar.bz2 linux-9090589d87506c578ea1523ffd7ae7fd9424fb28.zip | |
ACPI: convert acpi_device_lock spinlock to mutex
Convert acpi_device_lock to a mutex to avoid
a potential race upon access to /proc/acpi/wakeup
Delete the lock entirely in wakeup.c
since it is not necessary (and can not sleep)
Found-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/sleep.h')
| -rw-r--r-- | drivers/acpi/sleep.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h index cfaf8f5b0a14..8a8f3b3382a6 100644 --- a/drivers/acpi/sleep.h +++ b/drivers/acpi/sleep.h @@ -5,3 +5,6 @@ extern int acpi_suspend (u32 state); extern void acpi_enable_wakeup_device_prep(u8 sleep_state); extern void acpi_enable_wakeup_device(u8 sleep_state); extern void acpi_disable_wakeup_device(u8 sleep_state); + +extern struct list_head acpi_wakeup_device_list; +extern struct mutex acpi_device_lock; |