linux-kernel - Re: [PATCH] power: supply: core: simplify charge

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Message-ID: <f3d9a568-8953-4fce-9fef-5fe1539fb91a@redhat.com>
Date: Fri, 29 Mar 2024 12:32:37 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Thomas Weißschuh <linux@...ssschuh.net>,
 Sebastian Reichel <sre@...nel.org>
Cc: Sebastian Reichel <sebastian.reichel@...labora.com>,
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] power: supply: core: simplify charge_behaviour formatting

Hi,

On 3/29/24 9:18 AM, Thomas Weißschuh wrote:
> The function power_supply_show_charge_behaviour() is not needed and can
> be removed completely.
> Removing the function also saves a spurious read of the property from
> the driver on each call.
> 
> The convulted logic was a leftover from an earlier patch revision.
> Some restructuring made this cleanup possible.
> 
> Suggested-by: Hans de Goede <hdegoede@...hat.com>
> Link: https://lore.kernel.org/all/9e035ae4-cb07-4f84-8336-1a0050855bea@redhat.com/
> Fixes: 4e61f1e9d58f ("power: supply: core: fix charge_behaviour formatting")
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans



> ---
>  drivers/power/supply/power_supply_sysfs.c | 20 ++------------------
>  1 file changed, 2 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
> index 0d2c3724d0bc..b86e11bdc07e 100644
> --- a/drivers/power/supply/power_supply_sysfs.c
> +++ b/drivers/power/supply/power_supply_sysfs.c
> @@ -271,23 +271,6 @@ static ssize_t power_supply_show_usb_type(struct device *dev,
>  	return count;
>  }
>  
> -static ssize_t power_supply_show_charge_behaviour(struct device *dev,
> -						  struct power_supply *psy,
> -						  union power_supply_propval *value,
> -						  char *buf)
> -{
> -	int ret;
> -
> -	ret = power_supply_get_property(psy,
> -					POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
> -					value);
> -	if (ret < 0)
> -		return ret;
> -
> -	return power_supply_charge_behaviour_show(dev, psy->desc->charge_behaviours,
> -						  value->intval, buf);
> -}
> -
>  static ssize_t power_supply_show_property(struct device *dev,
>  					  struct device_attribute *attr,
>  					  char *buf) {
> @@ -321,7 +304,8 @@ static ssize_t power_supply_show_property(struct device *dev,
>  						&value, buf);
>  		break;
>  	case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
> -		ret = power_supply_show_charge_behaviour(dev, psy, &value, buf);
> +		ret = power_supply_charge_behaviour_show(dev, psy->desc->charge_behaviours,
> +							 value.intval, buf);
>  		break;
>  	case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
>  		ret = sysfs_emit(buf, "%s\n", value.strval);
> 
> ---
> base-commit: 070c1470ae24317e7b19bd3882b300b6d69922a4
> change-id: 20240329-power-supply-simplify-5722806eefdd
> 
> Best regards,