kobject_put+0x1d/0x50
eeepc kernel: [ 1495.429017]  [<b03b2385>] ? usb_autopm_put_interface+0x25/0x30
eeepc kernel: [ 1495.429017]  [<b03f0e5d>] ? uvc_v4l2_release+0x5d/0xd0
eeepc kernel: [ 1495.429017]  [<b0355d2f>] put_device+0xf/0x20
eeepc kernel: [ 1495.429017]  [<b03dfa96>] v4l2_release+0x56/0x60
eeepc kernel: [ 1495.429017]  [<b019c8dc>] fput+0xcc/0x220
eeepc kernel: [ 1495.429017]  [<b01990f4>] filp_close+0x44/0x70
eeepc kernel: [ 1495.429017]  [<b012b238>] put_files_struct+0x158/0x180
eeepc kernel: [ 1495.429017]  [<b012b100>] ? put_files_struct+0x20/0x180
eeepc kernel: [ 1495.429017]  [<b012b2a0>] exit_files+0x40/0x50
eeepc kernel: [ 1495.429017]  [<b012b9e7>] do_exit+0x5a7/0x660
eeepc kernel: [ 1495.429017]  [<b0135f72>] ? __dequeue_signal+0x12/0x120
eeepc kernel: [ 1495.429017]  [<b055edf2>] ? _raw_spin_unlock_irq+0x22/0x30
eeepc kernel: [ 1495.429017]  [<b012badc>] do_group_exit+0x3c/0xb0
eeepc kernel: [ 1495.429017]  [<b015792b>] ? trace_hardirqs_on+0xb/0x10
eeepc kernel: [ 1495.429017]  [<b013755f>] get_signal_to_deliver+0x18f/0x570
eeepc kernel: [ 1495.429017]  [<b01020f7>] do_signal+0x47/0x9e0
eeepc kernel: [ 1495.429017]  [<b055edf2>] ? _raw_spin_unlock_irq+0x22/0x30
eeepc kernel: [ 1495.429017]  [<b015792b>] ? trace_hardirqs_on+0xb/0x10
eeepc kernel: [ 1495.429017]  [<b0123300>] ? T.1034+0x30/0xc0
eeepc kernel: [ 1495.429017]  [<b055c45f>] ? schedule+0x29f/0x640
eeepc kernel: [ 1495.429017]  [<b0102ac8>] do_notify_resume+0x38/0x40
eeepc kernel: [ 1495.429017]  [<b055f154>] work_notifysig+0x9/0x11
eeepc kernel: [ 1495.429017] Code: e5 5d 83 f8 01 19 c0 f7 d0 83 e0 f0 c3 8d b4 26 00 00 00 00 55 85 c0 89 e5 75 09 31 c0 5d c3 90 8d 74 26 00 8b 40 04 85 c0 74 f0 <8b> 40 60 5d c3 8d 74 26 00 55 89 e5 53 89 c3 83 ec 04 8b 40 04
eeepc kernel: [ 1495.429017] EIP: [<b0358d37>] dev_get_drvdata+0x17/0x20 SS:ESP 0068:d3249cac
eeepc kernel: [ 1495.429017] CR2: 000000006b6b6bcb
eeepc kernel: [ 1495.466975] uvcvideo: Failed to resubmit video URB (-27).
eeepc kernel: [ 1495.467860] uvcvideo: Failed to resubmit video URB (-27).
eeepc kernel: last message repeated 3 times
eeepc kernel: [ 1495.512610] ---[ end trace 73ec16848794e5a5 ]---

For uvc device, dev->vdev.dev is the &intf->dev,
uvc_delete code is as below:
	usb_put_intf(dev->intf);
	usb_put_dev(dev->udev);

	uvc_status_cleanup(dev);
	uvc_ctrl_cleanup_device(dev);

	if (dev->vdev.dev)
		v4l2_device_unregister(&dev->vdev);

Fix it by get_device in v4l2_device_register and put_device in v4l2_device_disconnect

Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
ύ