diff --git a/arch/m68k/coldfire/clk.c b/arch/m68k/coldfire/clk.c
index 7bc666e482ebe82f400d8d184ec8c8b8c388c04d..076a9caa9557b1bbb54070071ab31892d6ff6f42 100644
--- a/arch/m68k/coldfire/clk.c
+++ b/arch/m68k/coldfire/clk.c
@@ -90,6 +90,10 @@ EXPORT_SYMBOL(clk_get);
 int clk_enable(struct clk *clk)
 {
 	unsigned long flags;
+
+	if (!clk)
+		return -EINVAL;
+
 	spin_lock_irqsave(&clk_lock, flags);
 	if ((clk->enabled++ == 0) && clk->clk_ops)
 		clk->clk_ops->enable(clk);