gpio: msic: 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.
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c
index fe9ef2bc..9a261ac 100644
--- a/drivers/gpio/gpio-msic.c
+++ b/drivers/gpio/gpio-msic.c
@@ -143,7 +143,7 @@
if (ret < 0)
return ret;
- return r & MSIC_GPIO_DIN_MASK;
+ return !!(r & MSIC_GPIO_DIN_MASK);
}
static void msic_gpio_set(struct gpio_chip *chip, unsigned offset, int value)