linux-kernel - Re: [PATCH] extcon: int3496: process id-pin first so that we start with the right status

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Message-id: <5A738AB1.1090606@samsung.com>
Date:   Fri, 02 Feb 2018 06:46:25 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] extcon: int3496: process id-pin first so that we start
 with the right status

On 2018년 01월 26일 04:39, Hans de Goede wrote:
> Some other drivers may be waiting for our extcon to show-up (exiting their
> probe methods with -EPROBE_DEFER until we show up).
> 
> These drivers will typically get the cable state directly after getting
> the extcon, this commit changes the int3496 code to process the id-pin
> before registering the extcon, so that other drivers see the correct state
> right away.
> 
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> ---
>  drivers/extcon/extcon-intel-int3496.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
> index c8691b5a9cb0..b23ee9d993a3 100644
> --- a/drivers/extcon/extcon-intel-int3496.c
> +++ b/drivers/extcon/extcon-intel-int3496.c
> @@ -131,6 +131,10 @@ static int int3496_probe(struct platform_device *pdev)
>  	if (IS_ERR(data->gpio_usb_mux))
>  		dev_info(dev, "can't request USB MUX GPIO\n");
>  
> +	/* process id-pin first so that we start with the right status */
> +	queue_delayed_work(system_wq, &data->work, 0);
> +	flush_delayed_work(&data->work);
> +
>  	/* register extcon device */
>  	data->edev = devm_extcon_dev_allocate(dev, int3496_cable);
>  	if (IS_ERR(data->edev))
> @@ -153,9 +157,6 @@ static int int3496_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> -	/* queue initial processing of id-pin */
> -	queue_delayed_work(system_wq, &data->work, 0);
> -
>  	platform_set_drvdata(pdev, data);
>  
>  	return 0;
> 

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics