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authorLinus Walleij <linus.walleij@linaro.org>2014-02-05 14:08:02 +0100
committerLinus Walleij <linus.walleij@linaro.org>2014-02-06 10:33:48 +0100
commit25b35da7f4cce82271859f1b6eabd9f3bd41a2bb (patch)
tree4ac95fc298a149ec24c8517bbf04db27d1c9aa6e
parentf86b7c70bc03236188c9a865aacd57b8d1ddb08c (diff)
gpio: generic: clamp retured value to [0,1]
The generic GPIO would return 0 for low generic GPIO, and something != 0 for high GPIO. Let's make this sane by clamping the returned value to [0,1]. Reported-by: Evgeny Boger <boger@contactless.ru> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-generic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c
index 8c778afdf49f..d815dd25eb47 100644
--- a/drivers/gpio/gpio-generic.c
+++ b/drivers/gpio/gpio-generic.c
@@ -139,7 +139,7 @@ static int bgpio_get(struct gpio_chip *gc, unsigned int gpio)
{
struct bgpio_chip *bgc = to_bgpio_chip(gc);
- return bgc->read_reg(bgc->reg_dat) & bgc->pin2mask(bgc, gpio);
+ return !!(bgc->read_reg(bgc->reg_dat) & bgc->pin2mask(bgc, gpio));
}
static void bgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)

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