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mfd: asic3: Be sure to clamp return value

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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: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Linus Walleij 2015-12-22 15:47:05 +01:00 committed by Lee Jones
parent fe0b486729
commit f8e3a514bf
1 changed files with 2 additions and 1 deletions
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drivers/mfd/asic3.c
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@ -502,7 +502,8 @@ static int asic3_gpio_get(struct gpio_chip *chip,
return -EINVAL;
}
return asic3_read_register(asic, gpio_base + ASIC3_GPIO_STATUS) & mask;
return !!(asic3_read_register(asic,
gpio_base + ASIC3_GPIO_STATUS) & mask);
}
static void asic3_gpio_set(struct gpio_chip *chip,