From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 19 Dec 2008 15:27:56 +0000 (-0500)
Subject: USB: cancel pending Set-Config requests if userspace gets there first
X-Git-Tag: v2.6.29-rc1~182^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df718962bf91c7bd345060aadaa24b03f6140b07;p=pandora-kernel.git

USB: cancel pending Set-Config requests if userspace gets there first

This patch (as1195) eliminates a potential problem identified by
Oliver Neukum.  When a driver queues an asynchronous Set-Config
request using usb_driver_set_configuration(), the request should be
cancelled if userspace changes the configuration first.  The patch
introduces a linked list of pending async Set-Config requests, and
uses it to invalidate the requests for a particular device whenever
that device's configuration is set.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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