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9090589d8 ACPI: convert acpi_device_lock spinlock to mutex ... Browse Code »

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
Signed-off-by: Shaohua Li
Signed-off-by: Len Brown

Shaohua Li
2009-04-07 12:02:40 +0800

sleep.h 324 Bytes

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extern u8 sleep_states[];
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;