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Revert "ACPI: scan: Release PM resources blocked by unused objects"

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commit 3b2b49e6df upstream.

Revert commit c10383e8dd ("ACPI: scan: Release PM resources blocked
by unused objects"), because it causes boot issues to appear on some
platforms.

Reported-by: Kyle D. Pelton <kyle.d.pelton@intel.com>
Reported-by: Saranya Gopal <saranya.gopal@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rafael J. Wysocki 2021-11-17 17:05:41 +01:00 committed by Greg Kroah-Hartman
parent ef2590a530
commit 1af7386f5f
3 changed files with 0 additions and 32 deletions
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25
drivers/acpi/glue.c
View File

@ -340,28 +340,3 @@ void acpi_device_notify_remove(struct device *dev)
acpi_unbind_one(dev);
}
int acpi_dev_turn_off_if_unused(struct device *dev, void *not_used)
{
struct acpi_device *adev = to_acpi_device(dev);
/*
* Skip device objects with device IDs, because they may be in use even
* if they are not companions of any physical device objects.
*/
if (adev->pnp.type.hardware_id)
return 0;
mutex_lock(&adev->physical_node_lock);
/*
* Device objects without device IDs are not in use if they have no
* corresponding physical device objects.
*/
if (list_empty(&adev->physical_node_list))
acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
mutex_unlock(&adev->physical_node_lock);
return 0;
}

1
drivers/acpi/internal.h
View File

@ -117,7 +117,6 @@ bool acpi_device_is_battery(struct acpi_device *adev);
bool acpi_device_is_first_physical_node(struct acpi_device *adev,
const struct device *dev);
int acpi_bus_register_early_device(int type);
int acpi_dev_turn_off_if_unused(struct device *dev, void *not_used);
/* --------------------------------------------------------------------------
Device Matching and Notification

6
drivers/acpi/scan.c
View File

@ -2559,12 +2559,6 @@ int __init acpi_scan_init(void)
}
}
/*
* Make sure that power management resources are not blocked by ACPI
* device objects with no users.
*/
bus_for_each_dev(&acpi_bus_type, NULL, NULL, acpi_dev_turn_off_if_unused);
acpi_turn_off_unused_power_resources();
acpi_scan_initialized = true;