linux-kernel - [PATCH 2/2] pinctrl: mediatek: Initialize variable *buf to zero

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Message-ID: <20230118062036.26258-3-Guodong.Liu@mediatek.com>
Date:   Wed, 18 Jan 2023 14:20:36 +0800
From:   Guodong Liu <Guodong.Liu@...iatek.com>
To:     Sean Wang <sean.wang@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Light Hsieh <light.hsieh@...iatek.com>,
        Rob Herring <robh@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
CC:     <linux-mediatek@...ts.infradead.org>, <linux-gpio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Zhiyong Tao <zhiyong.tao@...iatek.com>,
        Guodong Liu <Guodong.Liu@...iatek.com>
Subject: [PATCH 2/2] pinctrl: mediatek: Initialize variable *buf to zero

Coverity spotted that *buf is not initialized to zero in
mtk_pctrl_dbg_show. Using uninitialized variable *buf as argument to %s
when calling seq_printf. Fix this coverity by initializing *buf as zero.

Fixes: 184d8e13f9b1 ("pinctrl: mediatek: Add support for pin configuration
dump via debugfs.")
Signed-off-by: Guodong Liu <Guodong.Liu@...iatek.com>
---
 drivers/pinctrl/mediatek/pinctrl-paris.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
index e736c1610f3c..d2fbfffda038 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -714,7 +714,7 @@ static void mtk_pctrl_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
 			  unsigned int gpio)
 {
 	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
-	char buf[PIN_DBG_BUF_SZ];
+	char buf[PIN_DBG_BUF_SZ] = { 0 };
 
 	(void)mtk_pctrl_show_one_pin(hw, gpio, buf, PIN_DBG_BUF_SZ);
 
-- 
2.25.1