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 <[email protected]> Signed-off-by: Greg Ungerer <[email protected]>
jledet · Sep 26, 2016 · 742859a · 742859a
1 parent 3ec53d6
commit 742859a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git 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);