diff mbox

ACPI / scan: Do not use dummy HID for system bus ACPI nodes

Message ID 3202600.6sHYvcf502@vostro.rjw.lan (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Rafael Wysocki Jan. 3, 2013, 1:52 a.m. UTC 
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

At one point acpi_device_set_id() checks if acpi_device_hid(device)
returns NULL, but that never happens, so system bus devices with an
empty list of PNP IDs are given the dummy HID ("device") instead of
the "system bus HID" ("LNXSYBUS").  Fix the code to use the right
check.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/scan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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diff mbox

Patch

Index: linux/drivers/acpi/scan.c
===================================================================
--- linux.orig/drivers/acpi/scan.c
+++ linux/drivers/acpi/scan.c
@@ -1398,7 +1398,7 @@  static void acpi_device_set_id(struct ac
 			acpi_add_id(device, ACPI_DOCK_HID);
 		else if (!acpi_ibm_smbus_match(device))
 			acpi_add_id(device, ACPI_SMBUS_IBM_HID);
-		else if (!acpi_device_hid(device) &&
+		else if (list_empty(&device->pnp.ids) &&
 			 ACPI_IS_ROOT_DEVICE(device->parent)) {
 			acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
 			strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);