diff options
| author | Borislav Petkov <bbpetkov@yahoo.de> | 2007-10-22 19:11:09 +0400 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-23 10:07:55 +0400 |
| commit | 7507e8da2f21476007501f04d8bce2b7d0cb3971 (patch) | |
| tree | 97dfb3efdfda3ee3c9402e52191b722c186e83e7 /sound/core/control.c | |
| parent | 31127f2eb945f092010a457c65260b0e19471cc5 (diff) | |
| download | linux-7507e8da2f21476007501f04d8bce2b7d0cb3971.tar.xz | |
[ALSA] sound/core/control.c: hard-irq-safe -> hard-irq-unsafe lock warning
The lock grabbed in snd_ctl_empty_read_queue() is hardirq-unsafe but we hold
an hardirq-safe one already, so make the &ctl->read_lock also hard-irq-safe.
Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/core/control.c')
| -rw-r--r-- | sound/core/control.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/core/control.c b/sound/core/control.c index 4c3aa8e10378..df0774c76f6f 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -93,15 +93,16 @@ static int snd_ctl_open(struct inode *inode, struct file *file) static void snd_ctl_empty_read_queue(struct snd_ctl_file * ctl) { + unsigned long flags; struct snd_kctl_event *cread; - spin_lock(&ctl->read_lock); + spin_lock_irqsave(&ctl->read_lock, flags); while (!list_empty(&ctl->events)) { cread = snd_kctl_event(ctl->events.next); list_del(&cread->list); kfree(cread); } - spin_unlock(&ctl->read_lock); + spin_unlock_irqrestore(&ctl->read_lock, flags); } static int snd_ctl_release(struct inode *inode, struct file *file) |