diff --git a/arch/arm/mach-rk30/clock.c b/arch/arm/mach-rk30/clock.c
index 572e59e2f9ed..6950186b5cf3 100755
--- a/arch/arm/mach-rk30/clock.c
+++ b/arch/arm/mach-rk30/clock.c
@@ -445,6 +445,9 @@ struct clk *rk30_clk_get_parent(struct clk *clk)
 struct clk *clk_get_parent(struct clk *clk)
 #endif
 {
+	if (clk == NULL || IS_ERR(clk)) {
+		return ERR_PTR(-EINVAL);
+	}
 	return clk->parent;
 }