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ACPI: scan: Rename acpi_bus_get_parent() and rearrange it

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The acpi_bus_get_parent() name doesn't really reflect the
purpose of the function so change it to a more accurate
acpi_find_parent_acpi_dev().

While at it, rearrange the code inside that function to make it
easier to read.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Punit Agrawal <punit.agrawal@bytedance.com>
This commit is contained in:
Rafael J. Wysocki 2022-08-10 18:15:24 +02:00
parent 45e9aa1fdb
commit f6f1e12f3a
1 changed files with 14 additions and 10 deletions
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24
drivers/acpi/scan.c
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@ -816,10 +816,9 @@ static const char * const acpi_honor_dep_ids[] = {
NULL
};
static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
static struct acpi_device *acpi_find_parent_acpi_dev(acpi_handle handle)
{
struct acpi_device *device;
acpi_status status;
struct acpi_device *adev;
/*
* Fixed hardware devices do not appear in the namespace and do not
@ -830,13 +829,18 @@ static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
return acpi_root;
do {
status = acpi_get_parent(handle, &handle);
if (ACPI_FAILURE(status))
return status == AE_NULL_ENTRY ? NULL : acpi_root;
acpi_status status;
device = acpi_fetch_acpi_dev(handle);
} while (!device);
return device;
status = acpi_get_parent(handle, &handle);
if (ACPI_FAILURE(status)) {
if (status != AE_NULL_ENTRY)
return acpi_root;
return NULL;
}
adev = acpi_fetch_acpi_dev(handle);
} while (!adev);
return adev;
}
acpi_status
@ -1778,7 +1782,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
INIT_LIST_HEAD(&device->pnp.ids);
device->device_type = type;
device->handle = handle;
device->parent = acpi_bus_get_parent(handle);
device->parent = acpi_find_parent_acpi_dev(handle);
fwnode_init(&device->fwnode, &acpi_device_fwnode_ops);
acpi_set_device_status(device, ACPI_STA_DEFAULT);
acpi_device_get_busid(device);