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[media] cx18: convert to unlocked_ioctl 

Also added locking around snd_cx18_pcm_ioctl as a precaution
as requested by Andy Walls.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-11-19 17:04:31 -03:00 committed by Mauro Carvalho Chehab
parent 4f68775b7d
commit 78b055be27
2 changed files with 8 additions and 2 deletions
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8
drivers/media/video/cx18/cx18-alsa-pcm.c
View File

@ -218,7 +218,13 @@ static int snd_cx18_pcm_capture_close(struct snd_pcm_substream *substream)
static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
return snd_pcm_lib_ioctl(substream, cmd, arg);
struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream);
int ret;
snd_cx18_lock(cxsc);
ret = snd_pcm_lib_ioctl(substream, cmd, arg);
snd_cx18_unlock(cxsc);
return ret;
}

2
drivers/media/video/cx18/cx18-streams.c
View File

@ -41,7 +41,7 @@ static struct v4l2_file_operations cx18_v4l2_enc_fops = {
.read = cx18_v4l2_read,
.open = cx18_v4l2_open,
/* FIXME change to video_ioctl2 if serialization lock can be removed */
.ioctl = cx18_v4l2_ioctl,
.unlocked_ioctl = cx18_v4l2_ioctl,
.release = cx18_v4l2_close,
.poll = cx18_v4l2_enc_poll,
};