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ARM: w90x900: let clk_disable() return immediately if clk is NULL

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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.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Masahiro Yamada 2017-03-28 18:17:03 +09:00 committed by Arnd Bergmann
parent 0152790881
commit e1ffaa551c
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-w90x900/clock.c
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@ -46,6 +46,9 @@ void clk_disable(struct clk *clk)
{
unsigned long flags;
if (!clk)
return;
WARN_ON(clk->enabled == 0);
spin_lock_irqsave(&clocks_lock, flags);