From: Mike Turquette <mturquette@linaro.org>
Date: Thu, 22 Aug 2013 06:58:09 +0000 (-0700)
Subject: clk: handle NULL struct clk gracefully
X-Git-Tag: v3.12-rc1~78^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89ac8d7ae1cde0f8c7a2f85c2e3b475d54aa9163;p=pandora-kernel.git

clk: handle NULL struct clk gracefully

At some point changes to clk_set_rate and clk_set_parent introduced a
bug whereby NULL struct clk pointers were treated as an error. This is
in violation of the API in include/linux/clk.h. Reintroduce graceful
handling of NULL clk's by bailing from clk_set_rate and clk_set_parent
with return codes of zero.

Signed-off-by: Mike Turquette <mturquette@linaro.org>
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