Commit 78b8e141 authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Len Brown
Browse files

ACPI: fix synthetic HID for \_SB_ 



This makes \_SB_ show up as /sys/devices/LNXSYSTM:00/LNXSYBUS:00
rather than "device:00".  This has been broken for a loooong time
(at least since 2.6.13) because device->parent is an acpi_device
pointer, not a handle.

Signed-off-by: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent e3b87f8a

drivers/acpi/scan.c

+6 −12
Original line number Diff line number Diff line
@@ -1100,6 +1100,12 @@ static void acpi_device_set_id(struct acpi_device *device) 
		if (ACPI_IS_ROOT_DEVICE(device)) {

			hid = ACPI_SYSTEM_HID;

			break;

		} else if (ACPI_IS_ROOT_DEVICE(device->parent)) {

			/* \_SB_, the only root-level namespace device */

			hid = ACPI_BUS_HID;

			strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);

			strcpy(device->pnp.device_class, ACPI_BUS_CLASS);

			break;

		}



		status = acpi_get_object_info(device->handle, &info);
@@ -1149,18 +1155,6 @@ static void acpi_device_set_id(struct acpi_device *device) 
		break;

	}



	/*

	 * \_SB

	 * ----

	 * Fix for the system root bus device -- the only root-level device.

	 */

	if (((acpi_handle)device->parent == ACPI_ROOT_OBJECT) &&

	     (device->device_type == ACPI_BUS_TYPE_DEVICE)) {

		hid = ACPI_BUS_HID;

		strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);

		strcpy(device->pnp.device_class, ACPI_BUS_CLASS);

	}



	if (hid) {

		device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1);

		if (device->pnp.hardware_id) {

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