linux-kernel - Re: [PATCH 5/8] mfd: ab8500: Use power_supply

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Date:	Wed, 15 Oct 2014 11:07:12 +0200
From:	Lee Jones <lee.jones@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, Anton Vorontsov <anton@...msg.org>,
	Guenter Roeck <linux@...ck-us.net>,
	Pavel Machek <pavel@....cz>,
	Myungjoo Ham <myungjoo.ham@...sung.com>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH 5/8] mfd: ab8500: Use power_supply_*() API for accessing
 function attrs

On Tue, 14 Oct 2014, Krzysztof Kozlowski wrote:

> Replace direct calls to power supply function attributes with wrappers.
> Wrappers provide safe access access in case of unregistering the power
> supply (.e.g by removing the driver). Replace:
>  - get_property -> power_supply_get_property
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> ---
>  drivers/mfd/ab8500-sysctrl.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Acked-by: Lee Jones <lee.jones@...aro.org>

> diff --git a/drivers/mfd/ab8500-sysctrl.c b/drivers/mfd/ab8500-sysctrl.c
> index 8e0dae59844d..93b2d2c32ca3 100644
> --- a/drivers/mfd/ab8500-sysctrl.c
> +++ b/drivers/mfd/ab8500-sysctrl.c
> @@ -49,7 +49,8 @@ static void ab8500_power_off(void)
>  		if (!psy)
>  			continue;
>  
> -		ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);
> +		ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE,
> +				&val);
>  
>  		if (!ret && val.intval) {
>  			charger_present = true;
> @@ -63,8 +64,8 @@ static void ab8500_power_off(void)
>  	/* Check if battery is known */
>  	psy = power_supply_get_by_name("ab8500_btemp");
>  	if (psy) {
> -		ret = psy->get_property(psy, POWER_SUPPLY_PROP_TECHNOLOGY,
> -					&val);
> +		ret = power_supply_get_property(psy,
> +				POWER_SUPPLY_PROP_TECHNOLOGY, &val);
>  		if (!ret && val.intval != POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {
>  			printk(KERN_INFO
>  			       "Charger \"%s\" is connected with known battery."

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