4.20-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 8e782fcf78275f505194e767c515202d4fd274bc ]
If userspace has an open file descriptor on the rc input device or lirc device when rc_unregister_device() is called, then the rc close() is never called.
This ensures that the receiver is turned off on the nuvoton-cir driver during shutdown.
Signed-off-by: Sean Young sean@mess.org Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/rc/rc-main.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 877978dbd409..66a174979b3c 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -1952,6 +1952,8 @@ void rc_unregister_device(struct rc_dev *dev) rc_free_rx_device(dev);
mutex_lock(&dev->lock); + if (dev->users && dev->close) + dev->close(dev); dev->registered = false; mutex_unlock(&dev->lock);