From 9e882e3bc97c7774b93f3db483d2e75767b5cad1 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 12 Jun 2013 06:04:04 -0300 Subject: [PATCH] [media] v4l2-device: check if already unregistered It was possible to unregister an already unregistered v4l2_device struct. Add a check whether that already happened and just return if that was the case. Also refuse to register a v4l2_device if both the dev and name fields are empty. A warning was already produced in that case, but since the name field is now used to detect whether or not the v4l2_device was already unregistered this particular combination should be rejected. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Reading git-format-patch failed