From: Vladis Dronov <vdronov@redhat.com>
Date: Tue, 1 Dec 2015 21:09:17 +0000 (-0800)
Subject: Input: aiptek - fix crash on detecting device without endpoints
X-Git-Tag: v3.2.79~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=90eb3c037fe3f0f25f01713a92725a8daa2b41f3;p=pandora-kernel.git

Input: aiptek - fix crash on detecting device without endpoints

commit 8e20cf2bce122ce9262d6034ee5d5b76fbb92f96 upstream.

The aiptek driver crashes in aiptek_probe() when a specially crafted USB
device without endpoints is detected. This fix adds a check that the device
has proper configuration expected by the driver. Also an error return value
is changed to more matching one in one of the error paths.

Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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