From 52713c71b48a44136c06f6089cc90b089fc9f53f Mon Sep 17 00:00:00 2001
From: Michal Sojka <sojkam1@fel.cvut.cz>
Date: Tue, 15 Mar 2011 16:41:47 +0100
Subject: [PATCH] USB: Do not pass negative length to snoop_urb()

commit 9d02b42614149ebccf12c9c580601ed01bd83070 upstream.

When `echo Y > /sys/module/usbcore/parameters/usbfs_snoop` and
usb_control_msg() returns error, a lot of kernel memory is dumped to dmesg
until unhandled kernel paging request occurs.

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Reading git-format-patch failed