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Message-ID: <34114ce8-8809-7791-8d7e-ccad6ff7b1a1@redhat.com>
Date:   Mon, 24 Oct 2022 15:47:31 +0200
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Subject: Re: [PATCH v2 1/2] ACPI: battery: Pass battery hook pointer to hook
 callbacks
Content-Language: en-US
To:     Armin Wolf <W_Armin@gmx.de>, markgross@kernel.org
Cc:     rafael@kernel.org, lenb@kernel.org, hmh@hmh.eng.br,
        matan@svgalib.org, corentin.chary@gmail.com, jeremy@system76.com,
        productdev@system76.com, mario.limonciello@amd.com,
        pobrn@protonmail.com, coproscefalo@gmail.com,
        platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20220927204521.601887-1-W_Armin@gmx.de>
 <20220927204521.601887-2-W_Armin@gmx.de>
From:   Hans de Goede <hdegoede@redhat.com>
In-Reply-To: <20220927204521.601887-2-W_Armin@gmx.de>
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Precedence: bulk

Hi,

On 9/27/22 22:45, Armin Wolf wrote:
> Right now, is impossible for battery hook callbacks
> to access instance-specific data, forcing most drivers
> to provide some sort of global state. This however is
> difficult for drivers which can be instantiated multiple
> times and/or are hotplug-capable.
> 
> Pass a pointer to the batetry hook to those callbacks
> for usage with container_of().
> 
> Signed-off-by: Armin Wolf <W_Armin@gmx.de>

Thank you for your patch-series, I've applied the series to my
review-hans branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans


> ---
>  drivers/acpi/battery.c               | 8 ++++----
>  drivers/platform/x86/asus-wmi.c      | 4 ++--
>  drivers/platform/x86/huawei-wmi.c    | 4 ++--
>  drivers/platform/x86/lg-laptop.c     | 4 ++--
>  drivers/platform/x86/system76_acpi.c | 4 ++--
>  drivers/platform/x86/thinkpad_acpi.c | 4 ++--
>  drivers/platform/x86/toshiba_acpi.c  | 4 ++--
>  include/acpi/battery.h               | 4 ++--
>  8 files changed, 18 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
> index 306513fec1e1..9482b0b6eadc 100644
> --- a/drivers/acpi/battery.c
> +++ b/drivers/acpi/battery.c
> @@ -696,7 +696,7 @@ static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock)
>  	if (lock)
>  		mutex_lock(&hook_mutex);
>  	list_for_each_entry(battery, &acpi_battery_list, list) {
> -		hook->remove_battery(battery->bat);
> +		hook->remove_battery(battery->bat, hook);
>  	}
>  	list_del(&hook->list);
>  	if (lock)
> @@ -724,7 +724,7 @@ void battery_hook_register(struct acpi_battery_hook *hook)
>  	 * its attributes.
>  	 */
>  	list_for_each_entry(battery, &acpi_battery_list, list) {
> -		if (hook->add_battery(battery->bat)) {
> +		if (hook->add_battery(battery->bat, hook)) {
>  			/*
>  			 * If a add-battery returns non-zero,
>  			 * the registration of the extension has failed,
> @@ -762,7 +762,7 @@ static void battery_hook_add_battery(struct acpi_battery *battery)
>  	 * during the battery module initialization.
>  	 */
>  	list_for_each_entry_safe(hook_node, tmp, &battery_hook_list, list) {
> -		if (hook_node->add_battery(battery->bat)) {
> +		if (hook_node->add_battery(battery->bat, hook_node)) {
>  			/*
>  			 * The notification of the extensions has failed, to
>  			 * prevent further errors we will unload the extension.
> @@ -785,7 +785,7 @@ static void battery_hook_remove_battery(struct acpi_battery *battery)
>  	 * custom attributes from the battery.
>  	 */
>  	list_for_each_entry(hook, &battery_hook_list, list) {
> -		hook->remove_battery(battery->bat);
> +		hook->remove_battery(battery->bat, hook);
>  	}
>  	/* Then, just remove the battery from the list */
>  	list_del(&battery->list);
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index ae46af731de9..446669d11095 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -882,7 +882,7 @@ static ssize_t charge_control_end_threshold_show(struct device *device,
> 
>  static DEVICE_ATTR_RW(charge_control_end_threshold);
> 
> -static int asus_wmi_battery_add(struct power_supply *battery)
> +static int asus_wmi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	/* The WMI method does not provide a way to specific a battery, so we
>  	 * just assume it is the first battery.
> @@ -909,7 +909,7 @@ static int asus_wmi_battery_add(struct power_supply *battery)
>  	return 0;
>  }
> 
> -static int asus_wmi_battery_remove(struct power_supply *battery)
> +static int asus_wmi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_file(&battery->dev,
>  			   &dev_attr_charge_control_end_threshold);
> diff --git a/drivers/platform/x86/huawei-wmi.c b/drivers/platform/x86/huawei-wmi.c
> index eac3e6b4ea11..1dec4427053a 100644
> --- a/drivers/platform/x86/huawei-wmi.c
> +++ b/drivers/platform/x86/huawei-wmi.c
> @@ -468,7 +468,7 @@ static DEVICE_ATTR_RW(charge_control_start_threshold);
>  static DEVICE_ATTR_RW(charge_control_end_threshold);
>  static DEVICE_ATTR_RW(charge_control_thresholds);
> 
> -static int huawei_wmi_battery_add(struct power_supply *battery)
> +static int huawei_wmi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	int err = 0;
> 
> @@ -483,7 +483,7 @@ static int huawei_wmi_battery_add(struct power_supply *battery)
>  	return err;
>  }
> 
> -static int huawei_wmi_battery_remove(struct power_supply *battery)
> +static int huawei_wmi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_file(&battery->dev, &dev_attr_charge_control_start_threshold);
>  	device_remove_file(&battery->dev, &dev_attr_charge_control_end_threshold);
> diff --git a/drivers/platform/x86/lg-laptop.c b/drivers/platform/x86/lg-laptop.c
> index 332868b140ed..d662b64b0ba9 100644
> --- a/drivers/platform/x86/lg-laptop.c
> +++ b/drivers/platform/x86/lg-laptop.c
> @@ -546,7 +546,7 @@ static DEVICE_ATTR_RW(fn_lock);
>  static DEVICE_ATTR_RW(charge_control_end_threshold);
>  static DEVICE_ATTR_RW(battery_care_limit);
> 
> -static int lg_battery_add(struct power_supply *battery)
> +static int lg_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	if (device_create_file(&battery->dev,
>  			       &dev_attr_charge_control_end_threshold))
> @@ -555,7 +555,7 @@ static int lg_battery_add(struct power_supply *battery)
>  	return 0;
>  }
> 
> -static int lg_battery_remove(struct power_supply *battery)
> +static int lg_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_file(&battery->dev,
>  			   &dev_attr_charge_control_end_threshold);
> diff --git a/drivers/platform/x86/system76_acpi.c b/drivers/platform/x86/system76_acpi.c
> index 958df41ad509..9031bd53253f 100644
> --- a/drivers/platform/x86/system76_acpi.c
> +++ b/drivers/platform/x86/system76_acpi.c
> @@ -254,7 +254,7 @@ static struct attribute *system76_battery_attrs[] = {
> 
>  ATTRIBUTE_GROUPS(system76_battery);
> 
> -static int system76_battery_add(struct power_supply *battery)
> +static int system76_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	// System76 EC only supports 1 battery
>  	if (strcmp(battery->desc->name, "BAT0") != 0)
> @@ -266,7 +266,7 @@ static int system76_battery_add(struct power_supply *battery)
>  	return 0;
>  }
> 
> -static int system76_battery_remove(struct power_supply *battery)
> +static int system76_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_groups(&battery->dev, system76_battery_groups);
>  	return 0;
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index 8fbe21ebcc52..75ba9e61264e 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -9897,7 +9897,7 @@ ATTRIBUTE_GROUPS(tpacpi_battery);
> 
>  /* ACPI battery hooking */
> 
> -static int tpacpi_battery_add(struct power_supply *battery)
> +static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	int batteryid = tpacpi_battery_get_id(battery->desc->name);
> 
> @@ -9908,7 +9908,7 @@ static int tpacpi_battery_add(struct power_supply *battery)
>  	return 0;
>  }
> 
> -static int tpacpi_battery_remove(struct power_supply *battery)
> +static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_groups(&battery->dev, tpacpi_battery_groups);
>  	return 0;
> diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
> index 43cc25351aea..c8f01f8f435d 100644
> --- a/drivers/platform/x86/toshiba_acpi.c
> +++ b/drivers/platform/x86/toshiba_acpi.c
> @@ -3113,7 +3113,7 @@ static struct attribute *toshiba_acpi_battery_attrs[] = {
> 
>  ATTRIBUTE_GROUPS(toshiba_acpi_battery);
> 
> -static int toshiba_acpi_battery_add(struct power_supply *battery)
> +static int toshiba_acpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	if (toshiba_acpi == NULL) {
>  		pr_err("Init order issue\n");
> @@ -3126,7 +3126,7 @@ static int toshiba_acpi_battery_add(struct power_supply *battery)
>  	return 0;
>  }
> 
> -static int toshiba_acpi_battery_remove(struct power_supply *battery)
> +static int toshiba_acpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook)
>  {
>  	device_remove_groups(&battery->dev, toshiba_acpi_battery_groups);
>  	return 0;
> diff --git a/include/acpi/battery.h b/include/acpi/battery.h
> index b8d56b702c7a..611a2561a014 100644
> --- a/include/acpi/battery.h
> +++ b/include/acpi/battery.h
> @@ -12,8 +12,8 @@
> 
>  struct acpi_battery_hook {
>  	const char *name;
> -	int (*add_battery)(struct power_supply *battery);
> -	int (*remove_battery)(struct power_supply *battery);
> +	int (*add_battery)(struct power_supply *battery, struct acpi_battery_hook *hook);
> +	int (*remove_battery)(struct power_supply *battery, struct acpi_battery_hook *hook);
>  	struct list_head list;
>  };
> 
> --
> 2.30.2
>