From: Kishon Vijay Abraham I <kishon@ti.com>
Date: Thu, 11 Jun 2015 16:42:11 +0000 (+0530)
Subject: usb: gadget: composite: Fix NULL pointer dereference
X-Git-Tag: omap-for-v4.3/fixes-merge-window~230^2~1^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4c21f0bdd2c0cd5d5be1bb56f0a28dae5041eed;p=pandora-kernel.git

usb: gadget: composite: Fix NULL pointer dereference

commit f563d230903210acc ("usb: gadget: composite: add req_match method
to usb_function") accesses cdev->config even before set config
is invoked causing a NULL pointer dereferencing error while running
Lecroy Mass Storage Compliance test.

Fix it here by accessing cdev->config only if it is non NULL.

Fixes: commit f563d230903210acc ("usb: gadget: composite: add req_match
method to usb_function").

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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