-stable review patch. If anyone has any objections, please let us know.
------------------
From: Karsten Wiese <[email protected]>
[PATCH] 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
From: Karsten Wiese <[email protected]>
Signed-off-by: Karsten Wiese <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.18.1.orig/sound/usb/usx2y/usx2yhwdeppcm.c
+++ linux-2.6.18.1/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -632,7 +632,7 @@ static int usX2Y_pcms_lock_check(struct
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;
}
}
--