[patch] [media] bttv: call mutex_init() on newly allocated lock

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Hi Sergej,

I'm hoping this patch will take care of the bug you reported:

https://bugzilla.kernel.org/show_bug.cgi?id=24602

Please try it out and let me know.  I'll resend with a proper
signed-off-by if it fixes the problem.  (I don't have the hardware to
test this myself).

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index a529619..5620e20 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3302,6 +3302,7 @@ static int bttv_open(struct file *file)
 	 * Let's first copy btv->init at fh, holding cap.vb_lock, and then work
 	 * with the rest of init, holding btv->lock.
 	 */
+	mutex_init(&fh->cap.vb_lock);
 	mutex_lock(&fh->cap.vb_lock);
 	*fh = btv->init;
 	mutex_unlock(&fh->cap.vb_lock);
--
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