linux-kernel - Re: [PATCH v2 3/4] mfd: max77686: Use the struct i2c_driver .probe

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Date:   Mon, 23 Jan 2017 11:36:30 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Javier Martinez Canillas <javier@....samsung.com>
Cc:     linux-kernel@...r.kernel.org,
        Laxman Dewangan <ldewangan@...dia.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH v2 3/4] mfd: max77686: Use the struct i2c_driver
 .probe_new instead of .probe

On Fri, 13 Jan 2017, Javier Martinez Canillas wrote:

> If a driver is only used in DT platforms, there's no need to get the
> i2c_device_id as an argument of the probe function. Since this data
> can be get from the matching of_device_id.
> 
> There's a temporary .probe_new field in struct i2c_driver that can be
> used as probe callback for the case when i2c_device_id won't be used.
> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> Acked-by: Laxman Dewangan <ldewangan@...dia.com>
> Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
> Tested-by: Krzysztof Kozlowski <krzk@...nel.org>
> 
> ---
> 
> Changes in v2:
> - Add Laxman's Acked-by tag to patch 3/4.
> - Add Krzysztof's Reviewed-by and Tested-by tags to patch 3/4.
> 
>  drivers/mfd/max77686.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

Applied, thanks.

> diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c
> index 33dd09493605..896c1bf85acc 100644
> --- a/drivers/mfd/max77686.c
> +++ b/drivers/mfd/max77686.c
> @@ -172,8 +172,7 @@ static const struct of_device_id max77686_pmic_dt_match[] = {
>  };
>  MODULE_DEVICE_TABLE(of, max77686_pmic_dt_match);
>  
> -static int max77686_i2c_probe(struct i2c_client *i2c,
> -			      const struct i2c_device_id *id)
> +static int max77686_i2c_probe(struct i2c_client *i2c)
>  {
>  	struct max77686_dev *max77686 = NULL;
>  	unsigned int data;
> @@ -294,7 +293,7 @@ static struct i2c_driver max77686_i2c_driver = {
>  		   .pm = &max77686_pm,
>  		   .of_match_table = of_match_ptr(max77686_pmic_dt_match),
>  	},
> -	.probe = max77686_i2c_probe,
> +	.probe_new = max77686_i2c_probe,
>  	.id_table = max77686_i2c_id,
>  };
>  

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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