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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-03-28 12:17:02 +0300
committerArnd Bergmann <arnd@arndb.de>2017-03-30 18:38:34 +0300
commitaa9daa310dee3f86fa3a693fecd996a28d993cc6 (patch)
treef836446def30f338b71352a526834ad242e6ec70 /arch/arm/mach-mmp
parente1ffaa551cfbc5fc86bb6f40d41adb5e5106ab6c (diff)
downloadlinux-aa9daa310dee3f86fa3a693fecd996a28d993cc6.tar.xz
ARM: mmp: 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. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-mmp')
-rw-r--r--arch/arm/mach-mmp/clock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-mmp/clock.c b/arch/arm/mach-mmp/clock.c
index ac6633d0b69b..28fe64c6e2f5 100644
--- 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);