m68k: let clk_disable() return immediately if clk is NULL

742859ad · Masahiro Yamada <[email protected]> · 2016-09-19 03:01:14 +09:00

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 <[email protected]>
Signed-off-by: Greg Ungerer <[email protected]>

Commit: 742859adc721da65ff4e8b59412d73bd3d2a57fe
Parents: 3ec53d6f

Changes

1 files changed · +4 −0

File	Status	Add	Del	Content
arch/m68k/coldfire/clk.c	modified	+4	−0	View file

arch/m68k/coldfire/clk.c

View file

diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c
index fddfdcc..1e3c7e9 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);