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ARM: mmp: let clk_disable() return immediately if clk is NULL
author
Masahiro Yamada
<yamada.masahiro@socionext.com>
Tue, 28 Mar 2017 09:17:02 +0000
(18:17 +0900)
committer
Arnd Bergmann
<arnd@arndb.de>
Thu, 30 Mar 2017 15:38:34 +0000
(17:38 +0200)
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>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
arch/arm/mach-mmp/clock.c
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diff --git
a/arch/arm/mach-mmp/clock.c
b/arch/arm/mach-mmp/clock.c
index
ac6633d
..
28fe64c
100644
(file)
--- a/
arch/arm/mach-mmp/clock.c
+++ b/
arch/arm/mach-mmp/clock.c
@@
-67,6
+67,9
@@
void clk_disable(struct clk *clk)
{
unsigned long flags;
+ if (!clk)
+ return;
+
WARN_ON(clk->enabled == 0);
spin_lock_irqsave(&clocks_lock, flags);