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authorLinus Walleij <linus.walleij@linaro.org>2015-12-21 13:10:06 +0300
committerLinus Walleij <linus.walleij@linaro.org>2015-12-27 00:28:13 +0300
commit2e6d84564c07452ed10a7601484765d37880cc3a (patch)
tree6ee9dd4c9b492b424d575ea78307d28861d9442b /drivers/gpio
parente9639436091a5c65c391d9b5e218eb5fbf30173d (diff)
downloadlinux-2e6d84564c07452ed10a7601484765d37880cc3a.tar.xz
gpio: lpc32xx: 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: Roland Stigge <stigge@antcom.de> Cc: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-lpc32xx.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c
index 47e2dde63734..e888b5fcd236 100644
--- a/drivers/gpio/gpio-lpc32xx.c
+++ b/drivers/gpio/gpio-lpc32xx.c
@@ -288,21 +288,21 @@ static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin)
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
- return __get_gpio_state_p012(group, pin);
+ return !!__get_gpio_state_p012(group, pin);
}
static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin)
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
- return __get_gpio_state_p3(group, pin);
+ return !!__get_gpio_state_p3(group, pin);
}
static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin)
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
- return __get_gpi_state_p3(group, pin);
+ return !!__get_gpi_state_p3(group, pin);
}
static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
@@ -364,7 +364,7 @@ static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin)
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
- return __get_gpo_state_p3(group, pin);
+ return !!__get_gpo_state_p3(group, pin);
}
static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)