The timer will report events for an input device.
Reporting events for an unregistered device is bad.
Hence the timer must be killed first.
Signed-off-by: NOliver Neukum <oneukum@suse.com>
Signed-off-by: NSean Young <sean@mess.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>