diff options
| author | Mike Chan <mike@android.com> | 2009-08-25 18:10:32 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:37:52 -0800 |
| commit | 0c87f5efe31f9cfe0493f65914dee989577e9177 (patch) | |
| tree | 57cb91bd9b30549cf75975381abc117062337dce /kernel/power | |
| parent | b680227f20c5cbb3ee962c14cdeb7599c90aa861 (diff) | |
power: Prevent spinlock recursion when wake_unlock() is called
Signed-off-by: Mike Chan <mike@android.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/wakelock.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/power/wakelock.c b/kernel/power/wakelock.c index b24eb7594ef2..62714d75c3c9 100644 --- a/kernel/power/wakelock.c +++ b/kernel/power/wakelock.c @@ -216,13 +216,13 @@ static void expire_wake_lock(struct wake_lock *lock) pr_info("expired wake lock %s\n", lock->name); } +/* Caller must acquire the list_lock spinlock */ static void print_active_locks(int type) { unsigned long irqflags; struct wake_lock *lock; BUG_ON(type >= WAKE_LOCK_TYPE_COUNT); - spin_lock_irqsave(&list_lock, irqflags); list_for_each_entry(lock, &active_wake_locks[type], link) { if (lock->flags & WAKE_LOCK_AUTO_EXPIRE) { long timeout = lock->expires - jiffies; @@ -234,7 +234,6 @@ static void print_active_locks(int type) } else pr_info("active wake lock %s\n", lock->name); } - spin_unlock_irqrestore(&list_lock, irqflags); } static long has_wake_lock_locked(int type) @@ -306,9 +305,9 @@ static void expire_wake_locks(unsigned long data) unsigned long irqflags; if (debug_mask & DEBUG_EXPIRE) pr_info("expire_wake_locks: start\n"); + spin_lock_irqsave(&list_lock, irqflags); if (debug_mask & DEBUG_SUSPEND) print_active_locks(WAKE_LOCK_SUSPEND); - spin_lock_irqsave(&list_lock, irqflags); has_lock = has_wake_lock_locked(WAKE_LOCK_SUSPEND); if (debug_mask & DEBUG_EXPIRE) pr_info("expire_wake_locks: done, has_lock %ld\n", has_lock); |