From: Chenyuan Yang <chenyuan0y@gmail.com>
Date: Mon, 10 Feb 2025 23:25:52 +0000 (-0600)
Subject: pinctrl: renesas: rza2: Fix potential NULL pointer dereference
X-Git-Tag: v6.15-rc1~106^2~49^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f752ee5b5b86b5f88a5687c9eb0ef9b39859b908;p=thirdparty%2Fkernel%2Flinux.git

pinctrl: renesas: rza2: Fix potential NULL pointer dereference

`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>
---

diff --git a/drivers/pinctrl/renesas/pinctrl-rza2.c b/drivers/pinctrl/renesas/pinctrl-rza2.c
index dd1f8c29d3e75..a654ede01f705 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;