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mfd: ucb1x00-core: 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: Lee Jones <lee.jones@linaro.org>
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 15:48:33 +01:00 committed by Lee Jones
parent a5dca7dc7e
commit 0c7f3f92ff
1 changed files with 1 additions and 1 deletions
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2
drivers/mfd/ucb1x00-core.c
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@ -133,7 +133,7 @@ static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset)
val = ucb1x00_reg_read(ucb, UCB_IO_DATA);
ucb1x00_disable(ucb);
return val & (1 << offset);
return !!(val & (1 << offset));
}
static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset)