From 0f43ace41665e0cba0802162173e1696c79898f3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 4 Jan 2013 23:00:54 +0100 Subject: [PATCH] ACPI / scan: Do not use dummy HID for system bus ACPI nodes 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 Cc: --- drivers/acpi/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 53502d1bbf26f..c88be6c37c309 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1346,7 +1346,7 @@ static void acpi_device_set_id(struct acpi_device *device) 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); -- 2.39.5