From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 21 Dec 2015 15:33:41 +0000 (+0100)
Subject: pinctrl: ssbi-gpio: Be sure to clamp return value
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=464231fb1fb1360399a2eb11479c47e39facb030;p=linux-beck.git

pinctrl: ssbi-gpio: 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.

Also, this code was double-inverting a bool. That makes no
sense whatsoever, so I removed the double-invert.

Cc: Björn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
index 7bea0df06fb1..394ca34bec4a 100644
--- a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
@@ -487,10 +487,10 @@ static int pm8xxx_gpio_get(struct gpio_chip *chip, unsigned offset)
 	} else {
 		ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state);
 		if (!ret)
-			ret = !!state;
+			ret = state;
 	}
 
-	return ret;
+	return !!ret;
 }
 
 static void pm8xxx_gpio_set(struct gpio_chip *chip, unsigned offset, int value)