linux-kernel - Re: [PATCH 3/4] pm2301-charger: Check return value of regulator

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Message-ID: <20130904094234.GE20150@lee--X1>
Date:	Wed, 4 Sep 2013 10:42:34 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Sachin Kamat <sachin.kamat@...aro.org>
Cc:	linux-kernel@...r.kernel.org, anton@...msg.org
Subject: Re: [PATCH 3/4] pm2301-charger: Check return value of
 regulator_enable

On Mon, 02 Sep 2013, Sachin Kamat wrote:

> Check the return value of regulator_enable to silence the following
> warning:
> drivers/power/pm2301_charger.c:725:20: warning:
> ignoring return value of ‘regulator_enable’, declared with
> attribute warn_unused_result [-Wunused-result]

Same thing here.

> Signed-off-by: Sachin Kamat <sachin.kamat@...aro.org>
> Cc: Lee Jones <lee.jones@...aro.org>
> ---
>  drivers/power/pm2301_charger.c |    7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
> index ffa10ed..ab87d1a 100644
> --- a/drivers/power/pm2301_charger.c
> +++ b/drivers/power/pm2301_charger.c
> @@ -722,7 +722,12 @@ static int pm2xxx_charger_ac_en(struct ux500_charger *charger,
>  
>  		dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset);
>  		if (!pm2->vddadc_en_ac) {
> -			regulator_enable(pm2->regu);
> +			ret = regulator_enable(pm2->regu);
> +			if (ret) {
> +				dev_err(pm2->dev,
> +					"Failed to enable regulator\n");
> +				goto error_occured;
> +			}
>  			pm2->vddadc_en_ac = true;
>  		}
>  

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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