clk: handle NULL struct clk gracefully
authorMike Turquette <mturquette@linaro.org>
Thu, 22 Aug 2013 06:58:09 +0000 (23:58 -0700)
committerMike Turquette <mturquette@linaro.org>
Thu, 22 Aug 2013 06:58:09 +0000 (23:58 -0700)
commit89ac8d7ae1cde0f8c7a2f85c2e3b475d54aa9163
tree840a7dba0e72740e9155fa57974a46728015faeb
parentbddbd13453d838a30baf84869c56076c8ce2b211
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>
drivers/clk/clk.c