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[ALSA] Fix bug in snd-usb-usx2y's usX2Y_pcms_lock_check() 

Fix bug in snd-usb-usx2y's usX2Y_pcms_lock_check()
substream can be NULL......
in mainline, bug was introduced by:
2006-06-22  [ALSA] Add O_APPEND flag support to PCM

Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Karsten Wiese 2006-10-04 17:16:46 +02:00 committed by Jaroslav Kysela
parent 104326f8df
commit 9b08c2aa54
1 changed files with 1 additions and 1 deletions
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2
sound/usb/usx2y/usx2yhwdeppcm.c
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@ -632,7 +632,7 @@ static int usX2Y_pcms_lock_check(struct snd_card *card)
for (s = 0; s < 2; ++s) {
struct snd_pcm_substream *substream;
substream = pcm->streams[s].substream;
if (SUBSTREAM_BUSY(substream))
if (substream && SUBSTREAM_BUSY(substream))
err = -EBUSY;
}
}