linux-kernel - Re: [PATCH v2] power: supply: cpcap-battery: use device_get_match

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Date:   Sat, 2 Oct 2021 18:03:20 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Tang Bin <tangbin@...s.chinamobile.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] power: supply: cpcap-battery: use
 device_get_match_data() to simplify code

Hi,

On Tue, Sep 28, 2021 at 10:06:23AM +0800, Tang Bin wrote:
> In the function cpcap_battery_probe(), the driver only needs the
> data object, so use device_get_match_data() instead, to make the
> code cleaner.
> 
> Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
> ---

Thanks, queued.

-- Sebastian

> Changes from v1
>  - change the title and commit message.
>  - change the code to use other api to make code simple.
> ---
>  drivers/power/supply/cpcap-battery.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c
> index 8d62d4241..18e3ff0e1 100644
> --- a/drivers/power/supply/cpcap-battery.c
> +++ b/drivers/power/supply/cpcap-battery.c
> @@ -1026,20 +1026,13 @@ static const struct power_supply_desc cpcap_charger_battery_desc = {
>  static int cpcap_battery_probe(struct platform_device *pdev)
>  {
>  	struct cpcap_battery_ddata *ddata;
> -	const struct of_device_id *match;
>  	struct power_supply_config psy_cfg = {};
>  	int error;
> +	const struct cpcap_battery_config *cfg;
>  
> -	match = of_match_device(of_match_ptr(cpcap_battery_id_table),
> -				&pdev->dev);
> -	if (!match)
> -		return -EINVAL;
> -
> -	if (!match->data) {
> -		dev_err(&pdev->dev, "no configuration data found\n");
> -
> +	cfg = device_get_match_data(&pdev->dev);
> +	if (!cfg)
>  		return -ENODEV;
> -	}
>  
>  	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
>  	if (!ddata)
> @@ -1047,7 +1040,7 @@ static int cpcap_battery_probe(struct platform_device *pdev)
>  
>  	INIT_LIST_HEAD(&ddata->irq_list);
>  	ddata->dev = &pdev->dev;
> -	memcpy(&ddata->config, match->data, sizeof(ddata->config));
> +	memcpy(&ddata->config, cfg, sizeof(ddata->config));
>  
>  	ddata->reg = dev_get_regmap(ddata->dev->parent, NULL);
>  	if (!ddata->reg)
> -- 
> 2.20.1.windows.1
> 
> 
> 

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