From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
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@xxxxxxxxx>
---
drivers/acpi/scan.c | 9 ++++++++-
drivers/acpi/scan.c | 4 +++-
include/acpi/acpi_bus.h | 3 ++-
2 files changed, 5 insertions(+), 2 deletions(-)
Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -1797,8 +1797,10 @@ static void acpi_set_pnp_ids(acpi_handle
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++)
Index: linux-pm/include/acpi/acpi_bus.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_bus.h
+++ linux-pm/include/acpi/acpi_bus.h
@@ -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 {
--
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