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authorLinus Walleij <linus.walleij@linaro.org>2015-12-22 17:36:12 +0300
committerOlof Johansson <olof@lixom.net>2015-12-23 01:57:50 +0300
commit1f33b0131a15f4dc6b2fff9d3ef9d002070bda40 (patch)
tree78e68b419cd8b98d9fc17c2c7500dab6436d20bd /arch/arm/mach-sa1100
parent86d5e657d27851beb0e3e7bf48f13263acc5196a (diff)
downloadlinux-1f33b0131a15f4dc6b2fff9d3ef9d002070bda40.tar.xz
ARM: sa1100/simpad: 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: arm@kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/simpad.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c
index 41e476e571d7..d8965c682d2f 100644
--- a/arch/arm/mach-sa1100/simpad.c
+++ b/arch/arm/mach-sa1100/simpad.c
@@ -98,8 +98,8 @@ static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
{
if (offset > 15)
- return simpad_get_cs3_ro() & (1 << (offset - 16));
- return simpad_get_cs3_shadow() & (1 << offset);
+ return !!(simpad_get_cs3_ro() & (1 << (offset - 16)));
+ return !!(simpad_get_cs3_shadow() & (1 << offset));
};
static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)