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[ALSA] Fix possible races in timer callbacks

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Fix possible races in timer callbacks.

Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Takashi Iwai 2005-11-18 18:52:14 +01:00 • committed by Jaroslav Kysela
commit b32425ac93
6 changed files with 20 additions and 15 deletions
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5
sound/synth/emux/emux_synth.c
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@ -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);
}
/*