linux-kernel - Re: [PATCH v6 1/4] power: supply: twl4030-charger: allocate iio by devm_iio_channel

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Message-ID: <20170614201317.36kwxhdvgh55qbcg@earth>
Date:   Wed, 14 Jun 2017 22:13:18 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     "H. Nikolaus Schaller" <hns@...delico.com>
Cc:     Grygorii Strashko <grygorii.strashko@...com>,
        NeilBrown <neil@...wn.name>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Marek Belisko <marek@...delico.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org, letux-kernel@...nphoenux.org,
        notasas@...il.com, linux-omap@...r.kernel.org
Subject: Re: [PATCH v6 1/4] power: supply: twl4030-charger: allocate iio by
 devm_iio_channel_get() and fix error path

Hi,

On Wed, Jun 14, 2017 at 11:25:53AM +0200, H. Nikolaus Schaller wrote:
> Suggested-by: Sebastian Reichel <sre@...nel.org>
> Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
> ---
>  drivers/power/supply/twl4030_charger.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c
> index 785a07bc4f39..9507c24495ba 100644
> --- a/drivers/power/supply/twl4030_charger.c
> +++ b/drivers/power/supply/twl4030_charger.c
> @@ -1017,7 +1017,7 @@ static int twl4030_bci_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> -	bci->channel_vac = iio_channel_get(&pdev->dev, "vac");
> +	bci->channel_vac = devm_iio_channel_get(&pdev->dev, "vac");
>  	if (IS_ERR(bci->channel_vac)) {
>  		bci->channel_vac = NULL;
>  		dev_warn(&pdev->dev, "could not request vac iio channel");
> @@ -1044,7 +1044,7 @@ static int twl4030_bci_probe(struct platform_device *pdev)
>  			       TWL4030_INTERRUPTS_BCIIMR1A);
>  	if (ret < 0) {
>  		dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
> -		goto fail;
> +		return ret;
>  	}
>  
>  	reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
> @@ -1073,10 +1073,6 @@ static int twl4030_bci_probe(struct platform_device *pdev)
>  		twl4030_charger_enable_backup(0, 0);
>  
>  	return 0;
> -fail:
> -	iio_channel_release(bci->channel_vac);
> -
> -	return ret;
>  }
>  
>  static int twl4030_bci_remove(struct platform_device *pdev)
> @@ -1087,8 +1083,6 @@ static int twl4030_bci_remove(struct platform_device *pdev)
>  	twl4030_charger_enable_usb(bci, false);
>  	twl4030_charger_enable_backup(0, 0);
>  
> -	iio_channel_release(bci->channel_vac);
> -
>  	device_remove_file(&bci->usb->dev, &dev_attr_mode);
>  	device_remove_file(&bci->ac->dev, &dev_attr_mode);
>  	/* mask interrupts */

Thanks, queued.

-- Sebastian

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