linux-kernel - [PATCH v1 0/2] PCI: ACPI: PM: Rework root bus wakeup notification setup and wakeup source registration

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Message-ID: <2395536.ElGaqSPkdT@rafael.j.wysocki>
Date: Mon, 08 Dec 2025 13:09:16 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: Linux PM <linux-pm@...r.kernel.org>,
 Linux PCI <linux-pci@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
 Bjorn Helgaas <helgaas@...nel.org>, Armin Wolf <w_armin@....de>
Subject:
 [PATCH v1 0/2] PCI: ACPI: PM: Rework root bus wakeup notification setup and
 wakeup source registration

Hi All,

Patch [1/2] updates the registration of PCI root bus wakeup notification setup
in order to simplify code in pci_acpi_wake_bus() and to prepare for the other
change.  This is not expected to affect functionality.

Patch [2/2] modifies the ACPI PM notifier registration to add wakeup sources
under devices that are going to be affected by wakeup handling instead of
registering them under ACPI companions of those devices (rationale explained
in the patch changelog).  This will change the sysfs layout (wakeup source
devices associated with PCI wakeup are now going to appear under PCI devices
and the host bridge device), but it is not expected to affect user space
adversely.

Thanks!