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| author | Ricardo Ribalda <ricardo.ribalda@gmail.com> | 2013-11-06 05:39:35 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-12-09 14:50:51 -0200 |
| commit | bdee6bdb67e84aaf26a163aced908f4ab6bbd06b (patch) | |
| tree | 26093dfeeaa09369d2d6581b861bde6dfab0524c /drivers | |
| parent | 20e5d580195cd4200b0f92d8007784b28c61b235 (diff) | |
| download | blackbird-op-linux-bdee6bdb67e84aaf26a163aced908f4ab6bbd06b.tar.gz blackbird-op-linux-bdee6bdb67e84aaf26a163aced908f4ab6bbd06b.zip | |
[media] em28xx-video: Swap release order to avoid lock nesting
vb2_fop_release might take the video queue mutex lock.
In order to avoid nesting mutexes the private mutex is taken after the
fop_release has finished.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index fc5d60efd4ab..dd19c9ff76e0 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -1664,8 +1664,8 @@ static int em28xx_v4l2_close(struct file *filp) em28xx_videodbg("users=%d\n", dev->users); - mutex_lock(&dev->lock); vb2_fop_release(filp); + mutex_lock(&dev->lock); if (dev->users == 1) { /* the device is already disconnect, |
