diff options
| author | Sean Young <sean@mess.org> | 2020-12-20 13:29:54 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-01-04 11:00:25 +0100 |
| commit | 896111dc4bcf887b835b3ef54f48b450d4692a1d (patch) | |
| tree | 89c95a11a0a183978b946a9c98b2d498fc556e29 | |
| parent | 5c8fe583cce542aa0b84adc939ce85293de36e5e (diff) | |
| download | linux-896111dc4bcf887b835b3ef54f48b450d4692a1d.tar.gz | |
media: rc: ensure that uevent can be read directly after rc device register
There is a race condition where if the /sys/class/rc0/uevent file is read
before rc_dev->registered is set to true, -ENODEV will be returned.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1901089
Cc: stable@vger.kernel.org
Fixes: a2e2d73fa281 ("media: rc: do not access device via sysfs after rc_unregister_device()")
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | drivers/media/rc/rc-main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c index 1d811e5ffb55..29d4d01896ff 100644 --- a/drivers/media/rc/rc-main.c +++ b/drivers/media/rc/rc-main.c @@ -1928,6 +1928,8 @@ int rc_register_device(struct rc_dev *dev) goto out_raw; } + dev->registered = true; + rc = device_add(&dev->dev); if (rc) goto out_rx_free; @@ -1937,8 +1939,6 @@ int rc_register_device(struct rc_dev *dev) dev->device_name ?: "Unspecified device", path ?: "N/A"); kfree(path); - dev->registered = true; - /* * once the the input device is registered in rc_setup_rx_device, * userspace can open the input device and rc_open() will be called |