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[media] em28xx: unregister devices in case of failure

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If something bad happens during device registration, unregister
the already registered devices.

Without that, it will have lots of KASAN errors when udev
would try to open the devices.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-01-29 13:08:19 -02:00
parent af7d374a4c
commit 56a7f51554
1 changed files with 16 additions and 0 deletions
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16
drivers/media/usb/em28xx/em28xx-video.c
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@ -2579,6 +2579,22 @@ static int em28xx_v4l2_init(struct em28xx *dev)
return 0;
unregister_dev:
if (video_is_registered(&v4l2->radio_dev)) {
em28xx_info("V4L2 device %s deregistered\n",
video_device_node_name(&v4l2->radio_dev));
video_unregister_device(&v4l2->radio_dev);
}
if (video_is_registered(&v4l2->vbi_dev)) {
em28xx_info("V4L2 device %s deregistered\n",
video_device_node_name(&v4l2->vbi_dev));
video_unregister_device(&v4l2->vbi_dev);
}
if (video_is_registered(&v4l2->vdev)) {
em28xx_info("V4L2 device %s deregistered\n",
video_device_node_name(&v4l2->vdev));
video_unregister_device(&v4l2->vdev);
}
v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
v4l2_device_unregister(&v4l2->v4l2_dev);
err: