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| author | Takashi Iwai <tiwai@suse.de> | 2009-12-28 12:24:22 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-28 12:24:22 +0100 |
| commit | 78b8d5d2ee280c463908fd75f3bdf246bcb6ac8d (patch) | |
| tree | 6919af56842f47f2a2b553b890320a9952c501b6 /sound | |
| parent | 9980c6209ebc2a02eb3ca51a4fae1e17f645c868 (diff) | |
| download | linux-78b8d5d2ee280c463908fd75f3bdf246bcb6ac8d.tar.bz2 | |
ALSA: usb-audio - Avoid Oops after disconnect
As the release of substreams may be done asynchronously from the
disconnection, close callback needs to check the shutdown flag before
actually accessing the usb interface.
Reference: Novell bnc#505027
http://bugzilla.novell.com/show_bug.cgi?id=565027
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/usbaudio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 4963defee18a..9edef4684978 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -1936,7 +1936,7 @@ static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) struct snd_usb_stream *as = snd_pcm_substream_chip(substream); struct snd_usb_substream *subs = &as->substream[direction]; - if (subs->interface >= 0) { + if (!as->chip->shutdown && subs->interface >= 0) { usb_set_interface(subs->dev, subs->interface, 0); subs->interface = -1; } |