linux-kernel - Re: [PATCH 11/50] pinctrl: cherryview: Use devm_pinctrl

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Date:	Thu, 25 Feb 2016 13:42:06 +0200
From:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	linus.walleij@...aro.org, corbet@....net, lee@...nel.org,
	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,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH 11/50] pinctrl: cherryview: Use devm_pinctrl_register()
 for pinctrl registration

Hi,

On Wed, Feb 24, 2016 at 06:45:36PM +0530, Laxman Dewangan wrote:
> Use devm_pinctrl_register() for pin control registration.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> ---
>  drivers/pinctrl/intel/pinctrl-cherryview.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pinctrl/intel/pinctrl-cherryview.c b/drivers/pinctrl/intel/pinctrl-cherryview.c
> index 4251e07..1152b8a 100644
> --- a/drivers/pinctrl/intel/pinctrl-cherryview.c
> +++ b/drivers/pinctrl/intel/pinctrl-cherryview.c
> @@ -1526,7 +1526,8 @@ static int chv_pinctrl_probe(struct platform_device *pdev)
>  	pctrl->pctldesc.pins = pctrl->community->pins;
>  	pctrl->pctldesc.npins = pctrl->community->npins;
>  
> -	pctrl->pctldev = pinctrl_register(&pctrl->pctldesc, &pdev->dev, pctrl);
> +	pctrl->pctldev = devm_pinctrl_register(&pdev->dev, &pctrl->pctldesc,
> +					       pctrl);
>  	if (IS_ERR(pctrl->pctldev)) {
>  		dev_err(&pdev->dev, "failed to register pinctrl driver\n");
>  		return PTR_ERR(pctrl->pctldev);

You missed one pinctrl_unregister() call inside chv_pinctrl_probe().
Check right below this point where chv_gpio_probe() is called.

> @@ -1548,7 +1549,6 @@ static int chv_pinctrl_remove(struct platform_device *pdev)
>  	struct chv_pinctrl *pctrl = platform_get_drvdata(pdev);
>  
>  	gpiochip_remove(&pctrl->chip);
> -	pinctrl_unregister(pctrl->pctldev);
>  
>  	return 0;
>  }
> -- 
> 2.1.4

Thanks,

-- 
heikki