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[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>
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@ -1664,8 +1664,8 @@ static int em28xx_v4l2_close(struct file *filp)
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em28xx_videodbg("users=%d\n", dev->users);
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mutex_lock(&dev->lock);
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vb2_fop_release(filp);
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mutex_lock(&dev->lock);
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if (dev->users == 1) {
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/* the device is already disconnect,
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