From e97f9b5277afeabb54892ebc6f68500098467ba1 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 27 Feb 2013 17:25:15 +0200 Subject: gpio/gpio-ich: fix ichx_gpio_check_available() return what callers expect ichx_gpio_check_available() returns either 0 or -ENXIO depending on whether the given GPIO is available or not. However, callers of this function treat the return value as boolean: ... if (!ichx_gpio_check_available(gpio, nr)) return -ENXIO; which erroneusly fails when the GPIO is available and not vice versa. Fix this by making the function return boolean as expected by the callers. Signed-off-by: Mika Westerberg Signed-off-by: Grant Likely diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c index 6f2306d..f9dbd50 100644 --- a/drivers/gpio/gpio-ich.c +++ b/drivers/gpio/gpio-ich.c @@ -128,9 +128,9 @@ static int ichx_read_bit(int reg, unsigned nr) return data & (1 << bit) ? 1 : 0; } -static int ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) +static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) { - return (ichx_priv.use_gpio & (1 << (nr / 32))) ? 0 : -ENXIO; + return ichx_priv.use_gpio & (1 << (nr / 32)); } static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr) -- cgit v0.10.2