From: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Date: Mon, 23 Dec 2013 18:34:23 +0000 (+0100)
Subject: spi: rspi: Fix NULL pointer dereference on SH7757
X-Git-Tag: v3.14-rc1~91^2~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efd85acb4f2118348fc3a7c831872d5e70c7bec0;p=pandora-kernel.git

spi: rspi: Fix NULL pointer dereference on SH7757

SH7757 doesn't pass platform data, in which case spi-rspi uses default
parameters.

However, commit 5ce0ba88650f2606244a761d92e2b725f4ab3583 ("spi: rcar: add
Renesas QSPI support on RSPI") added a new user of the platform data, but
forgot to check for its validity first, causing a NULL pointer dereference
on SH7757.

Add the missing check to fix this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mark Brown <broonie@linaro.org>
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