Re: [PATCH v2 4/5] ALSA: hda: tas2781: Switch to use acpi_bus_get_primary_device()

[Takashi Iwai <tiwai@suse.de>]

On Wed, 30 Sep 2026 20:42:36 +0200,
Rafael J. Wysocki wrote:
> 
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
> 
> Replace acpi_get_first_physical_node() that is slated for removal
> with acpi_bus_get_primary_device() that takes a reference to the
> device it is about to return.
> 
> This addresses a potential use-after-free that may occur if the
> device returned by acpi_get_first_physical_node() is removed right
> after dropping its ACPI companion's physical_node_lock in that
> function.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> 
> This patch depends on new material in linux-next.
> 
> If you maintain the code updated by it, please consider ACKing it, so I can
> pick it up and remove the problematic API replaced by it during the 7.4
> merge window.
> 
> In the absence of feedback, it will be resent again when 7.4-rc1 is out.
> 
> Thanks!

Acked-by: Takashi Iwai <tiwai@suse.de>


thanks,

Takashi