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mfd: htc-egpio: 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: Philipp Zabel <philipp.zabel@gmail.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 15:47:39 +01:00 committed by Lee Jones
parent 2d5f72b85a
commit f7d6236696
1 changed files with 1 additions and 1 deletions
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2
drivers/mfd/htc-egpio.c
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@ -163,7 +163,7 @@ static int egpio_get(struct gpio_chip *chip, unsigned offset)
value = egpio_readw(ei, reg); value = egpio_readw(ei, reg);
pr_debug("readw(%p + %x) = %x\n", pr_debug("readw(%p + %x) = %x\n",
ei->base_addr, reg << ei->bus_shift, value); ei->base_addr, reg << ei->bus_shift, value);
return value & bit; return !!(value & bit);
} }
static int egpio_direction_input(struct gpio_chip *chip, unsigned offset) static int egpio_direction_input(struct gpio_chip *chip, unsigned offset)