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[ALSA] Fix hang-up at disconnection of usb-audio

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Fix hang-up at disconnection of usb-audio devices while accessing PCM.
Don't handle PCM operations any more after shutdown flag is set.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Takashi Iwai
2006-11-08 15:41:29 +01:00
committed by Jaroslav Kysela
parent 282e0c87f2
commit de1b8b93a0
3 changed files with 8 additions and 4 deletions
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3
sound/core/oss/pcm_oss.c
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@@ -2359,7 +2359,8 @@ static int snd_pcm_oss_release(struct inode *inode, struct file *file)
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
snd_assert(substream != NULL, return -ENXIO);
pcm = substream->pcm;
snd_pcm_oss_sync(pcm_oss_file);
if (!pcm->card->shutdown)
snd_pcm_oss_sync(pcm_oss_file);
mutex_lock(&pcm->open_mutex);
snd_pcm_oss_release_file(pcm_oss_file);
mutex_unlock(&pcm->open_mutex);