tree 95a9552242797efd04bd752ab5f07963d837805a
parent c8155cc5d839838f8425dbea568fc537337176a7
author Franck Bui-Huu <vagabon.xyz@gmail.com> 1147713833 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1150927452 -0700

[PATCH] Fix a deadlock in usbtest

ctrl_complete functions acquires ctx->lock and tries to unlink
all queued urbs in case of errors through usb_unlink_urb func.
In its turn usb_unlink_urb calls, through the hcd driver,
usb_hcd_giveback_urb which calls ctrl_complete again. At this
time, ctx->lock is already taken by the same function.

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>