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

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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>
Cc: <stable@vger.kernel.org>
This commit is contained in:
Rafael J. Wysocki 2013-01-04 23:00:54 +01:00
parent 0271f4f117
commit 4f5f64cf0c
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/scan.c
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@ -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);