linux-kernel - [PATCH] gpio: rcar: clamp returned value to [0,1]

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Date:	Tue, 24 Jun 2014 04:19:50 +0200
From:	Jürg Billeter <j@...ron.ch>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>
Cc:	Magnus Damm <damm@...nsource.se>, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jürg Billeter <j@...ron.ch>
Subject: [PATCH] gpio: rcar: clamp returned value to [0,1]

While it will be clamped to bool by gpiolib, let's make this sane
in the driver as well.

Signed-off-by: Jürg Billeter <j@...ron.ch>
---
 drivers/gpio/gpio-rcar.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 0c9f803..7c62121 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -240,9 +240,9 @@ static int gpio_rcar_get(struct gpio_chip *chip, unsigned offset)
 	/* testing on r8a7790 shows that INDT does not show correct pin state
 	 * when configured as output, so use OUTDT in case of output pins */
 	if (gpio_rcar_read(gpio_to_priv(chip), INOUTSEL) & bit)
-		return (int)(gpio_rcar_read(gpio_to_priv(chip), OUTDT) & bit);
+		return !!(gpio_rcar_read(gpio_to_priv(chip), OUTDT) & bit);
 	else
-		return (int)(gpio_rcar_read(gpio_to_priv(chip), INDT) & bit);
+		return !!(gpio_rcar_read(gpio_to_priv(chip), INDT) & bit);
 }
 
 static void gpio_rcar_set(struct gpio_chip *chip, unsigned offset, int value)
-- 
2.0.0

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