V4L/DVB (8026): Avoids an OOPS if dev struct can't be successfully recovered

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On some alsa versions, it seems that snd_pcm_substream_chip(substream)
is returning a NULL pointer. This causes an OOPS, as reported by:

https://bugs.launchpad.net/ubuntu/+source/linux-ubuntu-modules-2.6.24/+bug/212271
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/212960

This patch avoids the OOPS by not letting and open() succeed.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

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This commit is contained in:

Mauro Carvalho Chehab 2008-06-14 09:41:18 -03:00

parent 913f5fc209

commit 83ee87a31d

3 changed files with 19 additions and 1 deletions

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6

drivers/media/video/cx88/cx88-alsa.c

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6

drivers/media/video/em28xx/em28xx-audio.c

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8

drivers/media/video/saa7134/saa7134-alsa.c

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