From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 31 Oct 2014 22:40:47 +0000 (+0300)
Subject: m501fb: don't return zero on failure path in sm501fb_probe()
X-Git-Tag: omap-for-v3.19/fixes-rc1~128^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=816764859a5347315cb2f1578cf0252ee129c128;p=pandora-kernel.git

m501fb: don't return zero on failure path in sm501fb_probe()

If no framebuffers found, sm501fb_probe() breaks off initialization,
deallocates sm501fb_info, but returns zero. As a result, use after free
can happen in sm501fb_remove().

The patch adds -ENODEV as a return value in this case.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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