Bug 18892

Subject    : [BUG, Regression, bisected] USB mouse causes bug on 1st insert, ignored on 2nd insert, lsusb stuck at usbdev_open
Submitter  : Phil Turmel <philip@turmel.org>
Date       : 2010-09-20 1:33
Message-ID : 4C96B9DB.8030403@turmel.org
References : http://marc.info/?l=linux-kernel&m=128494643327096&w=2

This entry is being used for tracking a regression from 2.6.35. Please don't
close it until the problem is fixed in the mainline.

Caused by:

commit 8fe294caf8c868edd9046251824a0af91991bf43
Author: Guillaume Chazarain <guichaz@gmail.com>
Date:   Sun Sep 12 21:32:35 2010 +0200

    HID: fix hiddev's use of usb_find_interface
    
    My macbook infrared remote control was broken by commit
    bd25f4dd6972755579d0ea50d1a5ace2e9b00d1a ("HID: hiddev: use
    usb_find_interface, get rid of BKL").
    
    This device appears in dmesg as:
    apple 0003:05AC:8242.0001: hiddev0,hidraw0: USB HID v1.11 Device
    [Apple Computer, Inc. IR Receiver] on usb-0000:00:1d.2-1/input0
    
    It stopped working as lircd was getting ENODEV when opening /dev/usb/hiddev0.
    
    AFAICS hiddev_driver is a dummy driver so usb_find_interface(&hiddev_driver)
    does not find anything.
    
    The device is associated with the usbhid driver, so let's do
    usb_find_interface(&hid_driver) instead.
    
    $ ls -l /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-1/7-1:1.0/usb/hiddev0/device/driver
    lrwxrwxrwx 1 root root 0 2010-09-12 16:28 /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-1/7-1:1.0/usb/hiddev0/device/driver -> ../../../../../../bus/usb/drivers/usbhid
    
    Signed-off-by: Guillaume Chazarain <guichaz@gmail.com>
    Signed-off-by: Jiri Kosina <jkosina@suse.cz>


First-Bad-Commit : 8fe294caf8c868edd9046251824a0af91991bf43