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UPSTREAM: media: rc: ensure input/lirc device can be opened after register

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Since commit cb84343fce ("media: lirc: do not call close() or open() on
unregistered devices") rc_open() will return -ENODEV if rcdev->registered
is false. Ensure this is set before we register the input device and the
lirc device, else we have a short window where the neither the lirc or
input device can be opened.

Fixes: cb84343fce ("media: lirc: do not call close() or open() on unregistered devices")

Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
(cherry picked from commit d7832cd2a3)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This commit is contained in:
Sean Young
2018-05-24 05:47:17 -04:00
committed by Tao Huang
parent 96037450cd
commit dee540153a
1 changed files with 2 additions and 2 deletions
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4
drivers/media/rc/rc-main.c
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@@ -1861,6 +1861,8 @@ int rc_register_device(struct rc_dev *dev)
dev->device_name ?: "Unspecified device", path ?: "N/A");
kfree(path);
dev->registered = true;
if (dev->driver_type != RC_DRIVER_IR_RAW_TX) {
rc = rc_setup_rx_device(dev);
if (rc)
@@ -1880,8 +1882,6 @@ int rc_register_device(struct rc_dev *dev)
goto out_lirc;
}
dev->registered = true;
dev_dbg(&dev->dev, "Registered rc%u (driver: %s)\n", dev->minor,
dev->driver_name ? dev->driver_name : "unknown");