releases/6.14.5/pinctrl-renesas-rza2-fix-potential-null-pointer-dere.patch

From b0fd8ed392be9727e82f5839c9810f9a4f6dfd2a Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Mon, 10 Feb 2025 17:25:52 -0600
Subject: pinctrl: renesas: rza2: Fix potential NULL pointer dereference

From: Chenyuan Yang <chenyuan0y@gmail.com>

[ Upstream commit f752ee5b5b86b5f88a5687c9eb0ef9b39859b908 ]

`chip.label` in rza2_gpio_register() could be NULL.
Add the missing check.

Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/20250210232552.1545887-1-chenyuan0y@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/renesas/pinctrl-rza2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/renesas/pinctrl-rza2.c b/drivers/pinctrl/renesas/pinctrl-rza2.c
index 8b36161c7c502..3b58129638500 100644
--- a/drivers/pinctrl/renesas/pinctrl-rza2.c
+++ b/drivers/pinctrl/renesas/pinctrl-rza2.c
@@ -246,6 +246,9 @@ static int rza2_gpio_register(struct rza2_pinctrl_priv *priv)
 	int ret;
 
 	chip.label = devm_kasprintf(priv->dev, GFP_KERNEL, "%pOFn", np);
+	if (!chip.label)
+		return -ENOMEM;
+
 	chip.parent = priv->dev;
 	chip.ngpio = priv->npins;
 
-- 
2.39.5