diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2014-02-05 14:08:02 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2015-12-15 14:09:12 +0100 |
| commit | 253be8568aca5be9b7d4b1986da47fb49eb04f09 (patch) | |
| tree | a40f90f7aa493b93f28a3dc05035a592fda1f5ae /drivers | |
| parent | 8f237ebe42f2cb911245369276a6b3043c2815f2 (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>
Diffstat (limited to 'drivers')
| -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) |