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| author | Takashi Iwai <tiwai@suse.de> | 2006-11-08 15:41:29 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-11-28 13:46:38 +0100 |
| commit | de1b8b93a0ba016b07d13086a15ad692536e6995 (patch) | |
| tree | 840f0b486009d1ddd5c38fd57bc49e2f749253a1 /sound/core/pcm_native.c | |
| parent | 282e0c87f223afbe8b182197eb06c127a66353ce (diff) | |
| download | linux-de1b8b93a0ba016b07d13086a15ad692536e6995.tar.gz linux-de1b8b93a0ba016b07d13086a15ad692536e6995.tar.bz2 linux-de1b8b93a0ba016b07d13086a15ad692536e6995.zip | |
[ALSA] Fix hang-up at disconnection of usb-audio
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>
Diffstat (limited to 'sound/core/pcm_native.c')
| -rw-r--r-- | sound/core/pcm_native.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 37b4b10850ae..66e24b5da469 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1310,7 +1310,8 @@ static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, int f_flags) { struct snd_pcm_runtime *runtime = substream->runtime; - if (runtime->status->state == SNDRV_PCM_STATE_OPEN) + if (runtime->status->state == SNDRV_PCM_STATE_OPEN || + runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) return -EBADFD; if (snd_pcm_running(substream)) return -EBUSY; @@ -1568,7 +1569,8 @@ static int snd_pcm_drop(struct snd_pcm_substream *substream) runtime = substream->runtime; card = substream->pcm->card; - if (runtime->status->state == SNDRV_PCM_STATE_OPEN) + if (runtime->status->state == SNDRV_PCM_STATE_OPEN || + runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) return -EBADFD; snd_power_lock(card); |