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| author | Takashi Iwai <tiwai@suse.de> | 2005-11-18 18:52:14 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:29:08 +0100 |
| commit | b32425ac93370e1ba5556110e662f896b2e143b3 (patch) | |
| tree | c5837ee90c16d2aa358e399f2ad79ca4eb770e94 /sound/synth | |
| parent | 2eb061f41cf74f829bfe90a9c79c765172be9f0b (diff) | |
| download | lwn-b32425ac93370e1ba5556110e662f896b2e143b3.tar.gz lwn-b32425ac93370e1ba5556110e662f896b2e143b3.zip | |
[ALSA] Fix possible races in timer callbacks
Fix possible races in timer callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/synth')
| -rw-r--r-- | sound/synth/emux/emux_synth.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/synth/emux/emux_synth.c b/sound/synth/emux/emux_synth.c index c387a83a655e..24705d15ebd8 100644 --- a/sound/synth/emux/emux_synth.c +++ b/sound/synth/emux/emux_synth.c @@ -205,9 +205,10 @@ void snd_emux_timer_callback(unsigned long data) { struct snd_emux *emu = (struct snd_emux *) data; struct snd_emux_voice *vp; + unsigned long flags; int ch, do_again = 0; - spin_lock(&emu->voice_lock); + spin_lock_irqsave(&emu->voice_lock, flags); for (ch = 0; ch < emu->max_voices; ch++) { vp = &emu->voices[ch]; if (vp->state == SNDRV_EMUX_ST_PENDING) { @@ -225,7 +226,7 @@ void snd_emux_timer_callback(unsigned long data) emu->timer_active = 1; } else emu->timer_active = 0; - spin_unlock(&emu->voice_lock); + spin_unlock_irqrestore(&emu->voice_lock, flags); } /* |