From: Rafael J. Wysocki Date: Sat, 10 Jan 2026 11:57:00 +0000 (+0100) Subject: ACPI: PM: Let acpi_dev_pm_attach() skip devices without ACPI PM X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88fad6ce090b395af4c654594a54589a386bf24b;p=thirdparty%2Flinux.git ACPI: PM: Let acpi_dev_pm_attach() skip devices without ACPI PM It is pointless to attach the generic ACPI PM domain to devices whose ACPI companions don't support ACPI power management and don't have a wakeup GPE, so update acpi_dev_pm_attach() to skip such devices. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/5050298.GXAFRqVoOG@rafael.j.wysocki --- diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 4e0583274b8f4..c7d64ab1fe5d1 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -1457,6 +1457,15 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on) if (!adev || !acpi_match_device_ids(adev, special_pm_ids)) return 0; + /* + * Skip devices whose ACPI companions don't support power management and + * don't have a wakeup GPE. + */ + if (!acpi_device_power_manageable(adev) && !acpi_device_can_wakeup(adev)) { + dev_dbg(dev, "No ACPI power management or wakeup GPE\n"); + return 0; + } + /* * Only attach the power domain to the first device if the * companion is shared by multiple. This is to prevent doing power