linux-kernel - Re: [PATCH] ACPI: AC: Properly notify powermanagement core about changes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Mon, 27 May 2024 23:43:39 +0200
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
	Rajas Paranjpe <paranjperajas@...il.com>
Subject: Re: [PATCH] ACPI: AC: Properly notify powermanagement core about
 changes

Hi,

On Sun, May 26, 2024 at 11:40:01PM +0200, Thomas Weißschuh wrote:
> The powermanagement core does various actions when a power-supply changes.
> It calls into notifiers, LED triggers, other power supplies and emits an uevent.
> 
> To make sure that all these actions happen properly call power_supply_changed().
> 
> Reported-by: Rajas Paranjpe <paranjperajas@...il.com>
> Closes: https://github.com/MrChromebox/firmware/issues/420#issuecomment-2132251318
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>

-- Sebastian

>  drivers/acpi/ac.c  | 4 ++--
>  drivers/acpi/sbs.c | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
> index 2d4a35e6dd18..09a87fa222c7 100644
> --- a/drivers/acpi/ac.c
> +++ b/drivers/acpi/ac.c
> @@ -145,7 +145,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
>  						  dev_name(&adev->dev), event,
>  						  (u32) ac->state);
>  		acpi_notifier_call_chain(adev, event, (u32) ac->state);
> -		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
> +		power_supply_changed(ac->charger);
>  	}
>  }
>  
> @@ -268,7 +268,7 @@ static int acpi_ac_resume(struct device *dev)
>  	if (acpi_ac_get_state(ac))
>  		return 0;
>  	if (old_state != ac->state)
> -		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
> +		power_supply_changed(ac->charger);
>  
>  	return 0;
>  }
> diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
> index 94e3c000df2e..dc8164b182dc 100644
> --- a/drivers/acpi/sbs.c
> +++ b/drivers/acpi/sbs.c
> @@ -610,7 +610,7 @@ static void acpi_sbs_callback(void *context)
>  	if (sbs->charger_exists) {
>  		acpi_ac_get_present(sbs);
>  		if (sbs->charger_present != saved_charger_state)
> -			kobject_uevent(&sbs->charger->dev.kobj, KOBJ_CHANGE);
> +			power_supply_changed(sbs->charger);
>  	}
>  
>  	if (sbs->manager_present) {
> @@ -622,7 +622,7 @@ static void acpi_sbs_callback(void *context)
>  			acpi_battery_read(bat);
>  			if (saved_battery_state == bat->present)
>  				continue;
> -			kobject_uevent(&bat->bat->dev.kobj, KOBJ_CHANGE);
> +			power_supply_changed(bat->bat);
>  		}
>  	}
>  }
> 
> ---
> base-commit: 6fbf71854e2ddea7c99397772fbbb3783bfe15b5
> change-id: 20240526-acpi-ac-changed-a08c6941ae51
> 
> Best regards,
> -- 
> Thomas Weißschuh <linux@...ssschuh.net>
> 

Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)