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authorLinus Walleij <linus.walleij@linaro.org>2015-12-22 15:47:39 +0100
committerLee Jones <lee.jones@linaro.org>2016-01-14 08:43:26 +0000
commitf7d623669648d2a8d7e81671294c26e480ddcc79 (patch)
treebb669a3cc7b2db884e6486a45a82ee6ddadf7bb6 /drivers/mfd
parent2d5f72b85a8876088be77cee3a7bdee4c0259085 (diff)
downloadlinux-f7d623669648d2a8d7e81671294c26e480ddcc79.tar.bz2
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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/htc-egpio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/htc-egpio.c b/drivers/mfd/htc-egpio.c
index 6ccaf90d98fd..e4f4a31b76d9 100644
--- a/drivers/mfd/htc-egpio.c
+++ b/drivers/mfd/htc-egpio.c
@@ -163,7 +163,7 @@ static int egpio_get(struct gpio_chip *chip, unsigned offset)
value = egpio_readw(ei, reg);
pr_debug("readw(%p + %x) = %x\n",
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)