diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed.c b/drivers/pinctrl/aspeed/pinctrl-aspeed.c
index 22aca6d182c0..2c1e799b029e 100644
--- a/drivers/pinctrl/aspeed/pinctrl-aspeed.c
+++ b/drivers/pinctrl/aspeed/pinctrl-aspeed.c
@@ -115,7 +115,7 @@ static int aspeed_disable_sig(struct aspeed_pinmux_data *ctx,
 	int ret = 0;
 
 	if (!exprs)
-		return true;
+		return -EINVAL;
 
 	while (*exprs && !ret) {
 		ret = aspeed_sig_expr_disable(ctx, *exprs);