From: Truls Bengtsson <truls.bengtsson@sonymobile.com>
Date: Wed, 20 Mar 2013 13:02:25 +0000 (+0100)
Subject: usb: gadget: f_rndis: Avoid to use ERROR macro if cdev can be null
X-Git-Tag: v3.9-rc4~11^2~22^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=967baed40eaaf6df632b7e929b903140a9744b87;p=pandora-kernel.git

usb: gadget: f_rndis: Avoid to use ERROR macro if cdev can be null

The udc_irq service runs the isr_tr_complete_handler which in turn
"nukes" the endpoints, including a call to rndis_response_complete,
if appropriate. If the rndis_msg_parser fails here, an error will
be printed using a dev_err call (through the ERROR() macro).

However, if the usb cable was just disconnected the device (cdev)
might not be available and will be null. Since the dev_err macro will
dereference the cdev pointer we get a null pointer exception.

Reviewed-by: Radovan Lekanovic <radovan.lekanovic@sonymobile.com>
Signed-off-by: Truls Bengtsson <truls.bengtsson@sonymobile.com>
Signed-off-by: Oskar Andero <oskar.andero@sonymobile.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

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