linux-kernel - Re: [RFC PATCH 1/2] power: implement platform battery driver

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Message-ID: <20091116010814.GB4927@oksana.dev.rtsoft.ru>
Date:	Mon, 16 Nov 2009 04:08:14 +0300
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Paul Fertser <fercerpav@...il.com>
Cc:	Anton Vorontsov <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>,
	zaurus-devel@...ts.linuxtogo.org
Subject: Re: [RFC PATCH 1/2] power: implement platform battery driver

Hi Paul,

On Tue, Nov 10, 2009 at 05:37:52AM +0300, Paul Fertser wrote:
[...]
> +static int platform_bat_get_property(struct power_supply *psy,
> +				       enum power_supply_property psp,
> +				       union power_supply_propval *val)
> +{
> +	struct platform_battery *bat =
> +				container_of(psy, struct platform_battery, psy);
> +	size_t i;
> +	int present = 1;
> +
> +	if (bat->pdata->is_present)
> +		present = bat->pdata->is_present();
> +
> +	if (psp != POWER_SUPPLY_PROP_PRESENT && !present)
> +		return -ENODEV;
> +
> +	for (i = 0; i < psy->num_properties; i++)
> +		if (psy->properties[i] == psp) {
> +			val->intval = bat->pdata->get_property[i]();
> +			return 0;
> +		}

I'm not sure I like this. Why don't you just pass the enum
to pdata hook? So platform devices would just use a single
get_property function and a 'switch', like the rest of the
power supply drivers.

Thanks,

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
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