HID: hiddev: use usb_find_interface, get rid of BKL
This removes the private hiddev_table in the usbhid driver and changes it to use usb_find_interface instead. The advantage is that we can avoid the race between usb_register_dev and usb_open and no longer need the big kernel lock. This doesn't introduce race condition -- the intf pointer could be invalidated only in hiddev_disconnect() through usb_deregister_dev(), but that will block on minor_rwsem and not actually remove the device until usb_open(). Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: Jiri Kosina <jkosina@suse.cz> Cc: "Greg Kroah-Hartman" <gregkh@suse.de> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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