linux-kernel - Re: [PATCH 1/2] pinctrl: utils : add support to pass config type in generic util APIs

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Message-ID: <5213D0A5.7000504@wwwdotorg.org>
Date:	Tue, 20 Aug 2013 14:25:09 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
CC:	linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH 1/2] pinctrl: utils : add support to pass config type
 in generic util APIs

On 08/20/2013 06:12 AM, Laxman Dewangan wrote:
> Add support to pass the config type like GROUP or PIN when using
> the utils or generic pin configuration APIs. This will make the
> APIs more generic.

I think passing in the type parameter to the *_to_map APIs makes sense,
but I don't think you need to have separate free functions; the way to
free any kind of map entry is always known, so you don't have to limit
the code to only freeing one type.

> diff --git a/drivers/pinctrl/pinctrl-utils.c b/drivers/pinctrl/pinctrl-utils.c

> -void pinctrl_utils_dt_free_map(struct pinctrl_dev *pctldev,
> -	      struct pinctrl_map *map, unsigned num_maps)
> +void pinctrl_utils_dt_free_map_config(struct pinctrl_dev *pctldev,
> +		struct pinctrl_map *map, unsigned num_maps,
> +		enum pinctrl_map_type type)
>  {
>  	int i;
>  
>  	for (i = 0; i < num_maps; i++)
> -		if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
> +		if (map[i].type == type)
>  			kfree(map[i].data.configs.configs);

In other words, replace that if with:

switch (maps[i].type) {
case PIN_MAP_TYPE_CONFIGS_PIN:
case PIN_MAP_TYPE_CONFIGS_GROUP:
	kfree(map[i].data.configs.configs);
	break;
default:
	break;
}

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