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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Sean Young <sean@mess.org>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Sasha Levin <sashal@kernel.org>, linux-media@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 055/258] media: rc: ensure close() is called on rc_unregister_device
Date:   Mon, 28 Jan 2019 10:56:01 -0500
Message-Id: <20190128155924.51521-55-sashal@kernel.org>
In-Reply-To: <20190128155924.51521-1-sashal@kernel.org>
References: <20190128155924.51521-1-sashal@kernel.org>
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From: Sean Young <sean@mess.org>

[ 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 8b2c16dd58bd..0f218afdadaa 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -1956,6 +1956,8 @@ 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);
 
-- 
2.19.1