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authorLinus Walleij <linus.walleij@linaro.org>2015-12-21 16:50:18 +0100
committerLinus Walleij <linus.walleij@linaro.org>2016-01-25 18:02:09 +0100
commit48295fe932b3306c25ba6157db82f8f9938f2637 (patch)
treea7a24b4c9fc490e0015f45a6a5b4a3fa1fdf1d92 /arch
parentLinux 4.5-rc1 (diff)
downloadlinux-48295fe932b3306c25ba6157db82f8f9938f2637.tar.xz
linux-48295fe932b3306c25ba6157db82f8f9938f2637.zip
blackfin: gpio: 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: Steven Miao <realmz6@gmail.com> Cc: adi-buildroot-devel@lists.sourceforge.net Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/kernel/bfin_gpio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index a017359c1826..84baa6217c03 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -1159,7 +1159,7 @@ static int bfin_gpiolib_direction_output(struct gpio_chip *chip, unsigned gpio,
static int bfin_gpiolib_get_value(struct gpio_chip *chip, unsigned gpio)
{
- return bfin_gpio_get_value(gpio);
+ return !!bfin_gpio_get_value(gpio);
}
static void bfin_gpiolib_set_value(struct gpio_chip *chip, unsigned gpio, int value)