linux-kernel - Re: [PATCH 13/50] pinctrl: mtk-common: Use devm_pinctrl

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Message-ID: <56CDB1CF.6000007@gmail.com>
Date:	Wed, 24 Feb 2016 14:36:15 +0100
From:	Matthias Brugger <matthias.bgg@...il.com>
To:	Laxman Dewangan <ldewangan@...dia.com>, linus.walleij@...aro.org,
	corbet@....net, lee@...nel.org
Cc:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	bcm-kernel-feedback-list@...adcom.com,
	linux-mediatek@...ts.infradead.org,
	Hongzhou Yang <hongzhou.yang@...iatek.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>
Subject: Re: [PATCH 13/50] pinctrl: mtk-common: Use devm_pinctrl_register()
 for pinctrl registration



On 24/02/16 14:15, Laxman Dewangan wrote:
> Use devm_pinctrl_register() for pin control registration and clean
> the error path.
>
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> Cc: Matthias Brugger <matthias.bgg@...il.com>
> Cc: Hongzhou Yang <hongzhou.yang@...iatek.com>
> Cc: Yingjoe Chen <yingjoe.chen@...iatek.com>
> ---

Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>

>   drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 17 ++++++-----------
>   1 file changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> index ddc9217..194413d 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> @@ -1390,17 +1390,16 @@ int mtk_pctrl_init(struct platform_device *pdev,
>   	pctl->pctl_desc.pmxops = &mtk_pmx_ops;
>   	pctl->dev = &pdev->dev;
>
> -	pctl->pctl_dev = pinctrl_register(&pctl->pctl_desc, &pdev->dev, pctl);
> +	pctl->pctl_dev = devm_pinctrl_register(&pdev->dev, &pctl->pctl_desc,
> +					       pctl);
>   	if (IS_ERR(pctl->pctl_dev)) {
>   		dev_err(&pdev->dev, "couldn't register pinctrl driver\n");
>   		return PTR_ERR(pctl->pctl_dev);
>   	}
>
>   	pctl->chip = devm_kzalloc(&pdev->dev, sizeof(*pctl->chip), GFP_KERNEL);
> -	if (!pctl->chip) {
> -		ret = -ENOMEM;
> -		goto pctrl_error;
> -	}
> +	if (!pctl->chip)
> +		return -ENOMEM;
>
>   	*pctl->chip = mtk_gpio_chip;
>   	pctl->chip->ngpio = pctl->devdata->npins;
> @@ -1409,10 +1408,8 @@ int mtk_pctrl_init(struct platform_device *pdev,
>   	pctl->chip->base = -1;
>
>   	ret = gpiochip_add_data(pctl->chip, pctl);
> -	if (ret) {
> -		ret = -EINVAL;
> -		goto pctrl_error;
> -	}
> +	if (ret)
> +		return -EINVAL;
>
>   	/* Register the GPIO to pin mappings. */
>   	ret = gpiochip_add_pin_range(pctl->chip, dev_name(&pdev->dev),
> @@ -1490,8 +1487,6 @@ int mtk_pctrl_init(struct platform_device *pdev,
>
>   chip_error:
>   	gpiochip_remove(pctl->chip);
> -pctrl_error:
> -	pinctrl_unregister(pctl->pctl_dev);
>   	return ret;
>   }
>
>