From: Dong Aisheng <dong.aisheng@linaro.org>
Date: Tue, 10 Apr 2012 04:41:34 +0000 (+0800)
Subject: pinctrl: add some error checking for user interfaces
X-Git-Tag: v3.5-rc1~176^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad8bb720c23a80233e45ed31d67458f5e5b7ab31;p=pandora-kernel.git

pinctrl: add some error checking for user interfaces

This patch can avoid kernel oops in case the mux or config
function is not supported by driver.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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