339ad5ef6a02635455394525e37141b86fef
parent e78832cdca2ddd23c15abaed642cad1a39b3e122
author Ming Lei <tom.leiming@gmail.com> 1324045201 +0800
committer Greg Kroah-Hartman <gregkh@suse.de> 1325721161 -0800

USB: usb-skeleton.c: fix open/disconnect race

If usb device is disconnected between usb_get_intfdata()
and kref_get() in skel_open(), kref_get may access a freed
object.

Also check if device is disconnected in ->open.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ò