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https://github.com/archlinuxarm/PKGBUILDs.git
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31 lines
1.1 KiB
Diff
31 lines
1.1 KiB
Diff
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From 25b35da7f4cce82271859f1b6eabd9f3bd41a2bb Mon Sep 17 00:00:00 2001
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From: Linus Walleij <linus.walleij@linaro.org>
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Date: Wed, 05 Feb 2014 13:08:02 +0000
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Subject: gpio: generic: clamp retured value to [0,1]
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The generic GPIO would return 0 for low generic GPIO, and
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something != 0 for high GPIO. Let's make this sane by clamping
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the returned value to [0,1].
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Reported-by: Evgeny Boger <boger@contactless.ru>
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Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
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Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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---
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(limited to 'drivers/gpio/gpio-generic.c')
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diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c
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index 8c778af..d815dd2 100644
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--- a/drivers/gpio/gpio-generic.c
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+++ b/drivers/gpio/gpio-generic.c
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@@ -139,7 +139,7 @@ static int bgpio_get(struct gpio_chip *gc, unsigned int gpio)
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{
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struct bgpio_chip *bgc = to_bgpio_chip(gc);
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- return bgc->read_reg(bgc->reg_dat) & bgc->pin2mask(bgc, gpio);
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+ return !!(bgc->read_reg(bgc->reg_dat) & bgc->pin2mask(bgc, gpio));
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}
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static void bgpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
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--
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cgit v0.9.2
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