From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 27 Dec 2020 20:18:26 +0000 (+0100)
Subject: pinctrl: mediatek: correct error handling
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=97bf73762fed743291bb7e572aa659374990b93d;p=u-boot.git

pinctrl: mediatek: correct error handling

If no GPIO controller is found, the return value should not depend on a
random value on the stack. Initialize variable ret.

The problem was indicated by cppcheck.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
index 6553dde45c..4dd3f73ead 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
@@ -615,6 +615,7 @@ static int mtk_gpiochip_register(struct udevice *parent)
 	if (!drv)
 		return -ENOENT;
 
+	ret = -ENOENT;
 	dev_for_each_subnode(node, parent)
 		if (ofnode_read_bool(node, "gpio-controller")) {
 			ret = 0;