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ACPI: bus: Drop unused list heads from struct acpi_device 

Drop the children and node list heads that have no more users
from struct acpi_device and the code manipulating them from
__acpi_device_add() and acpi_device_del().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2022-06-13 20:38:00 +02:00
parent d674553009
commit e6bdbcc764
2 changed files with 1 additions and 12 deletions
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11
drivers/acpi/scan.c
View File

@ -465,8 +465,6 @@ static void acpi_device_del(struct acpi_device *device)
struct acpi_device_bus_id *acpi_device_bus_id;
mutex_lock(&acpi_device_lock);
if (device->parent)
list_del(&device->node);
list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node)
if (!strcmp(acpi_device_bus_id->bus_id,
@ -482,6 +480,7 @@ static void acpi_device_del(struct acpi_device *device)
}
list_del(&device->wakeup_list);
mutex_unlock(&acpi_device_lock);
acpi_power_add_remove_device(device, false);
@ -674,8 +673,6 @@ static int __acpi_device_add(struct acpi_device *device,
* -------
* Link this device to its parent and siblings.
*/
INIT_LIST_HEAD(&device->children);
INIT_LIST_HEAD(&device->node);
INIT_LIST_HEAD(&device->wakeup_list);
INIT_LIST_HEAD(&device->physical_node_list);
INIT_LIST_HEAD(&device->del_list);
@ -715,9 +712,6 @@ static int __acpi_device_add(struct acpi_device *device,
list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
}
if (device->parent)
list_add_tail(&device->node, &device->parent->children);
if (device->wakeup.flags.valid)
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
@ -746,9 +740,6 @@ static int __acpi_device_add(struct acpi_device *device,
err:
mutex_lock(&acpi_device_lock);
if (device->parent)
list_del(&device->node);
list_del(&device->wakeup_list);
err_unlock:

2
include/acpi/acpi_bus.h
View File

@ -365,8 +365,6 @@ struct acpi_device {
acpi_handle handle; /* no handle for fixed hardware */
struct fwnode_handle fwnode;
struct acpi_device *parent;
struct list_head children;
struct list_head node;
struct list_head wakeup_list;
struct list_head del_list;
struct acpi_device_status status;