diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index 92863e3818e5..192f3d326c74 100644
--- a/drivers/sh/clk/core.c
+++ b/drivers/sh/clk/core.c
@@ -294,7 +294,7 @@ int clk_enable(struct clk *clk)
 	int ret;
 
 	if (!clk)
-		return -EINVAL;
+		return 0;
 
 	spin_lock_irqsave(&clock_lock, flags);
 	ret = __clk_enable(clk);