gpio: ssbi-mpp: 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.

This code was also double-inverting a bool which makes no sense
so I removed that code and moved clamping toward the end.

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

diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
index 8f5c96cbf94e41a88828fd5dd42179f84615918d..23089d541230ad4a0165a2b47f32b34481dbecf3 100644 (file)
--- a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
@@ -502,13 +502,13 @@ static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
        int ret;
 
        if (!pin->input)
-               return pin->output_value;
+               return !!pin->output_value;
 
        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_mpp_set(struct gpio_chip *chip, unsigned offset, int value)