From 4d2296fb7c80fdc9925d29a8e85d617cad08731a Mon Sep 17 00:00:00 2001 From: Ma Ke Date: Thu, 5 Sep 2024 10:09:17 +0800 Subject: [PATCH] pinctrl: apple: check devm_kasprintf() returned value commit 665a58fe663ac7a9ea618dc0b29881649324b116 upstream. devm_kasprintf() can return a NULL pointer on failure but this returned value is not checked. Fix this lack and check the returned value. Found by code review. Cc: stable@vger.kernel.org Fixes: a0f160ffcb83 ("pinctrl: add pinctrl/GPIO driver for Apple SoCs") Signed-off-by: Ma Ke Reviewed-by: Christophe JAILLET Link: https://lore.kernel.org/20240905020917.356534-1-make24@iscas.ac.cn Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman --- drivers/pinctrl/pinctrl-apple-gpio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pinctrl/pinctrl-apple-gpio.c b/drivers/pinctrl/pinctrl-apple-gpio.c index 3751c7de37aa..f861e63f4115 100644 --- a/drivers/pinctrl/pinctrl-apple-gpio.c +++ b/drivers/pinctrl/pinctrl-apple-gpio.c @@ -474,6 +474,9 @@ static int apple_gpio_pinctrl_probe(struct platform_device *pdev) for (i = 0; i < npins; i++) { pins[i].number = i; pins[i].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "PIN%u", i); + if (!pins[i].name) + return -ENOMEM; + pins[i].drv_data = pctl; pin_names[i] = pins[i].name; pin_nums[i] = i;