From 742859adc721da65ff4e8b59412d73bd3d2a57fe Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 19 Sep 2016 03:01:14 +0900 Subject: [PATCH] m68k: 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 Signed-off-by: Greg Ungerer --- arch/m68k/coldfire/clk.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c index fddfdccae63b..1e3c7e9193d1 100644 --- a/arch/m68k/coldfire/clk.c +++ b/arch/m68k/coldfire/clk.c @@ -101,6 +101,10 @@ EXPORT_SYMBOL(clk_enable); void clk_disable(struct clk *clk) { unsigned long flags; + + if (!clk) + return; + spin_lock_irqsave(&clk_lock, flags); if ((--clk->enabled == 0) && clk->clk_ops) clk->clk_ops->disable(clk); -- 2.11.0