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authorTakashi Iwai <tiwai@suse.de>2005-11-18 18:52:14 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:29:08 +0100
commitb32425ac93370e1ba5556110e662f896b2e143b3 (patch)
treec5837ee90c16d2aa358e399f2ad79ca4eb770e94 /sound/drivers/opl3/opl3_midi.c
parent2eb061f41cf74f829bfe90a9c79c765172be9f0b (diff)
[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/drivers/opl3/opl3_midi.c')
-rw-r--r--sound/drivers/opl3/opl3_midi.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/drivers/opl3/opl3_midi.c b/sound/drivers/opl3/opl3_midi.c
index 48c480e050ce..1b6f227af370 100644
--- a/sound/drivers/opl3/opl3_midi.c
+++ b/sound/drivers/opl3/opl3_midi.c
@@ -238,10 +238,11 @@ void snd_opl3_timer_func(unsigned long data)
{
struct snd_opl3 *opl3 = (struct snd_opl3 *)data;
+ unsigned long flags;
int again = 0;
int i;
- spin_lock(&opl3->sys_timer_lock);
+ spin_lock_irqsave(&opl3->sys_timer_lock, flags);
for (i = 0; i < opl3->max_voices; i++) {
struct snd_opl3_voice *vp = &opl3->voices[i];
if (vp->state > 0 && vp->note_off_check) {
@@ -257,7 +258,7 @@ void snd_opl3_timer_func(unsigned long data)
} else {
opl3->sys_timer_status = 0;
}
- spin_unlock(&opl3->sys_timer_lock);
+ spin_unlock_irqrestore(&opl3->sys_timer_lock, flags);
}
/*