From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Sun, 30 Nov 2014 12:51:03 +0000 (+0100)
Subject: mtd: physmap_of: fix potential NULL dereference
X-Git-Tag: omap-for-v3.19/fixes-rc1~56^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92b633a8a482c4bc1ff3b7cffdcace7836861554;p=pandora-kernel.git

mtd: physmap_of: fix potential NULL dereference

On device remove, when testing the cmtd field of an of_flash
struct to decide whether it is a concatenated device or not,
we get a false positive on cmtd == NULL, and dereference it
subsequently. This may occur if of_flash_remove() is called
from the cleanup path of of_flash_probe().

Instead, test for NULL first, and only then perform the test
for a concatenated device.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---

Reading git-diff-tree failed