Commit a80bb4c9 authored Dec 21, 2015 by Linus Walleij

unicore: gpio: Be sure to clamp return value



As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

parent a4ce4b8d

arch/unicore32/kernel/gpio.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -52,7 +52,7 @@ device_initcall(puv3_gpio_leds_init);

		static int puv3_gpio_get(struct gpio_chip *chip, unsigned offset)
		{
		return readl(GPIO_GPLR) & GPIO_GPIO(offset);
		return !!(readl(GPIO_GPLR) & GPIO_GPIO(offset));
		}

		static void puv3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)