tree 840a7dba0e72740e9155fa57974a46728015faeb
parent bddbd13453d838a30baf84869c56076c8ce2b211
author Mike Turquette <mturquette@linaro.org> 1377154689 -0700
committer Mike Turquette <mturquette@linaro.org> 1377154689 -0700

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>