From: Axel Lin <axel.lin@ingics.com>
Date: Thu, 13 Mar 2014 02:32:37 +0000 (+0800)
Subject: spi: sh-sci: Prevent NULL pointer dereference
X-Git-Tag: v3.15-rc1~147^2~2^6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed8eb250d7b097dbd888e46ad0d35a2cb1858221;p=pandora-kernel.git

spi: sh-sci: Prevent NULL pointer dereference

If sp->info is NULL, we will hit NULL pointer dereference in probe() while
setting bus_num and num_chipselect for master:

        sp->bitbang.master->bus_num = sp->info->bus_num;
        sp->bitbang.master->num_chipselect = sp->info->num_chipselect;

Thus add NULL test for sp->info in probe() to prevent NULL pointer dereference.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

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