linux-kernel - Re: [PATCH 8/8] extcon: gpio: Always check state on resume

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Date:   Tue, 26 Sep 2017 11:25:44 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>
Cc:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        John Stultz <john.stultz@...aro.org>,
        Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH 8/8] extcon: gpio: Always check state on resume

Hi Linus,

On 2017년 09월 24일 23:56, Linus Walleij wrote:
> It makes most sense to always check the state of the GPIO external
> connector at system resume so just do this by default. Add a TODO
> if people turn out to desire to parameterize this.
> 
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  drivers/extcon/extcon-gpio.c | 9 +++++++++
>  1 file changed, 9 insertions(+)

Looks good to me.
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>

> 
> diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
> index b7353f5018b5..4f0ad5ad2722 100644
> --- a/drivers/extcon/extcon-gpio.c
> +++ b/drivers/extcon/extcon-gpio.c
> @@ -83,6 +83,15 @@ static int gpio_extcon_probe(struct platform_device *pdev)
>  	if (!data)
>  		return -ENOMEM;
>  
> +	/*
> +	 * Always checking connector state on resume makes most sense so do this
> +	 * by default.
> +	 *
> +	 * TODO: if parameterization is needed, augment this to use proper device
> +	 * properties or set it up from PM core.
> +	 */
> +	data->check_on_resume = true;
> +
>  	data->gpiod = devm_gpiod_get(dev, "extcon", GPIOD_IN);
>  	if (IS_ERR(data->gpiod))
>  		return PTR_ERR(data->gpiod);
> 

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics