[PATCH 28/54] pinctrl: spmi-mpp: Be sure to clamp return value

[PATCH 28/54] pinctrl: spmi-mpp: Be sure to clamp return value

[Linus Walleij]

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: Björn Andersson <bjorn.andersson@sonymobile.com>
Cc: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/pinctrl/qcom/pinctrl-spmi-mpp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index 69c14ba177d0..ea1d2b2f6fd1 100644
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -591,7 +591,7 @@ static int pmic_mpp_get(struct gpio_chip *chip, unsigned pin)
 		pad->out_value = ret & PMIC_MPP_REG_RT_STS_VAL_MASK;
 	}
 
-	return pad->out_value;
+	return !!pad->out_value;
 }
 
 static void pmic_mpp_set(struct gpio_chip *chip, unsigned pin, int value)
-- 
2.4.3

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Re: [PATCH 28/54] pinctrl: spmi-mpp: Be sure to clamp return value

[Bjorn Andersson]

On Tue 22 Dec 06:30 PST 2015, Linus Walleij wrote:

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

Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>

Regards,
Bjorn

> ---
>  drivers/pinctrl/qcom/pinctrl-spmi-mpp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
> index 69c14ba177d0..ea1d2b2f6fd1 100644
> --- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
> +++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
> @@ -591,7 +591,7 @@ static int pmic_mpp_get(struct gpio_chip *chip, unsigned pin)
>  		pad->out_value = ret & PMIC_MPP_REG_RT_STS_VAL_MASK;
>  	}
>  
> -	return pad->out_value;
> +	return !!pad->out_value;
>  }
>  
>  static void pmic_mpp_set(struct gpio_chip *chip, unsigned pin, int value)
> -- 
> 2.4.3
> 
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