pinctrl: baytrail: 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: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
index bb92f8ae6b33197c34749ba38d5b74f64dfa03f8..1fe9c198935311009fc417eb22446dd21a4ebfe6 100644 (file)
--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
+++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -281,7 +281,7 @@ static int byt_gpio_get(struct gpio_chip *chip, unsigned offset)
        val = readl(reg);
        raw_spin_unlock_irqrestore(&vg->lock, flags);
 
-       return val & BYT_LEVEL;
+       return !!(val & BYT_LEVEL);
 }
 
 static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value)