Commit 5a195c6d authored Oct 25, 2016 by Thor Thayer Committed by Linus Walleij Oct 25, 2016

gpio: gpiolib-devprop: Check chip->parent pointer before dereferencing



Confirm the chip->parent is valid before dereferencing because
the parent parameter is optional.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

parent f85522c2

drivers/gpio/gpiolib-devprop.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,11 @@ void devprop_gpiochip_set_names(struct gpio_chip *chip)
		const char **names;
		int ret, i;

		if (!chip->parent) {
		dev_warn(&gdev->dev, "GPIO chip parent is NULL\n");
		return;
		}

		ret = device_property_read_string_array(chip->parent, "gpio-line-names",
		NULL, 0);
		if (ret < 0)