[PATCH AUTOSEL 6.12 02/20] pinctrl: renesas: rza2: Fix potential NULL pointer dereference

[Sasha Levin]

From: Chenyuan Yang <chenyuan0y@xxxxxxxxx>

[ Upstream commit f752ee5b5b86b5f88a5687c9eb0ef9b39859b908 ]

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

Signed-off-by: Chenyuan Yang <chenyuan0y@xxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Link: https://lore.kernel.org/20250210232552.1545887-1-chenyuan0y@xxxxxxxxx
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 af689d7c117f3..4b94c8b917d0e 100644
--- a/drivers/pinctrl/renesas/pinctrl-rza2.c
+++ b/drivers/pinctrl/renesas/pinctrl-rza2.c
@@ -243,6 +243,9 @@ 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