From 5b8d8fb0fc7412a4a7ec884b9d3b744aca2c462f Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 21 Dec 2015 10:33:27 +0100 Subject: [PATCH] gpio: davinci: Be sure to clamp return value As we want gpio_chip .get() calls to be able to return negative error codes and propagate to drivers, we need to go over all drivers and make sure their return values are clamped to [0,1]. We do this by using the ret = !!(val) design pattern. Cc: Sekhar Nori Cc: Santosh Shilimkar Reviewed-by: Grygorii Strashko Signed-off-by: Linus Walleij --- drivers/gpio/gpio-davinci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c index 65ebaef935e1..1e3a617e0c10 100644 --- a/drivers/gpio/gpio-davinci.c +++ b/drivers/gpio/gpio-davinci.c @@ -125,7 +125,7 @@ static int davinci_gpio_get(struct gpio_chip *chip, unsigned offset) struct davinci_gpio_controller *d = chip2controller(chip); struct davinci_gpio_regs __iomem *g = d->regs; - return (1 << offset) & readl_relaxed(&g->in_data); + return !!((1 << offset) & readl_relaxed(&g->in_data)); } /* -- 2.11.0