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ACPI / scan: introduce platform_id device PNP type flag 

Only certain types of ACPI device objects can be enumerated as
platform devices, so in order to distinguish them from the others
introduce a new ACPI device PNP type flag, platform_id, and set it
for devices with a valid _HID to start with.

This change is based on a Zhang Rui's prototype.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2014-05-30 04:26:18 +02:00
parent 01cd4bac8c
commit 549e68455c
2 changed files with 5 additions and 2 deletions
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4
drivers/acpi/scan.c
View File

@ -1797,8 +1797,10 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
return;
}
if (info->valid & ACPI_VALID_HID)
if (info->valid & ACPI_VALID_HID) {
acpi_add_id(pnp, info->hardware_id.string);
pnp->type.platform_id = 1;
}
if (info->valid & ACPI_VALID_CID) {
cid_list = &info->compatible_id_list;
for (i = 0; i < cid_list->count; i++)

3
include/acpi/acpi_bus.h
View File

@ -233,7 +233,8 @@ struct acpi_hardware_id {
struct acpi_pnp_type {
u32 hardware_id:1;
u32 bus_address:1;
u32 reserved:30;
u32 platform_id:1;
u32 reserved:29;
};
struct acpi_device_pnp {