V4L/DVB (6810): media: video: usbvision: add mutex_unlock() to error paths
There are a few error paths which don't unlock the usbvision->lock. So I've added mutex_unlock() calls to fix those paths. Signed-off-by: NDaniel Walker <dwalker@mvista.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NThierry MERLE <thierry.merle@free.fr> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
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