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blackfin: bf609: let clk_disable() return immediately if clk is NULL 

In many of clk_disable() implementations, it is a no-op for a NULL
pointer input, but this is one of the exceptions.

Making it treewide consistent will allow clock consumers to call
clk_disable() without NULL pointer check.

Link: http://lkml.kernel.org/r/1490692624-11931-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Steven Miao <realmz6@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Masahiro Yamada 2017-05-03 14:51:35 -07:00 committed by Linus Torvalds
parent 672934d247
commit accce8e7e8
1 changed files with 3 additions and 0 deletions
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3
arch/blackfin/mach-bf609/clock.c
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@ -97,6 +97,9 @@ EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
if (!clk)
return;
if (clk->ops && clk->ops->disable)
clk->ops->disable(clk);
}