diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2014-02-05 14:08:02 +0100 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2015-12-26 14:55:37 +0100 |
| commit | 49125075801b59693bc0c02a6ad5584108cd67cb (patch) | |
| tree | b5ddba39de2b4dd5d18040b2545400144f467947 | |
| parent | bc45801b17dbf13b5139ad1a5bb1375b85c04933 (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.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c index d2196bf73847..de397823617e 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) |