Commit 622096fd authored by Wei Yongjun's avatar Wei Yongjun Committed by Bartosz Golaszewski
Browse files

gpio: idt3243x: Fix return value check in idt_gpio_probe() 



In case of error, the function devm_platform_ioremap_resource_byname()
returns ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Fixes: 4195926a ("gpio: Add support for IDT 79RC3243x GPIO controller")
Reported-by: default avatarHulk Robot <hulkci@huawei.com>
Signed-off-by: default avatarWei Yongjun <weiyongjun1@huawei.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
parent 354cb646

drivers/gpio/gpio-idt3243x.c

+4 −4
Original line number Diff line number Diff line
@@ -142,8 +142,8 @@ static int idt_gpio_probe(struct platform_device *pdev) 
		return -ENOMEM;



	ctrl->gpio = devm_platform_ioremap_resource_byname(pdev, "gpio");

	if (!ctrl->gpio)

		return -ENOMEM;

	if (IS_ERR(ctrl->gpio))

		return PTR_ERR(ctrl->gpio);



	ctrl->gc.parent = dev;
@@ -160,8 +160,8 @@ static int idt_gpio_probe(struct platform_device *pdev) 


	if (device_property_read_bool(dev, "interrupt-controller")) {

		ctrl->pic = devm_platform_ioremap_resource_byname(pdev, "pic");

		if (!ctrl->pic)

			return -ENOMEM;

		if (IS_ERR(ctrl->pic))

			return PTR_ERR(ctrl->pic);



		parent_irq = platform_get_irq(pdev, 0);

		if (!parent_irq)