From 9b08c2aa54948361da0e2d26b47e3bcb8f8911e8 Mon Sep 17 00:00:00 2001
From: Karsten Wiese <annabellesgarden@yahoo.de>
Date: Wed, 4 Oct 2006 17:16:46 +0200
Subject: [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
Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
---
sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index 9acef9d90543..20708d2ffb6a 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -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;
}
}