diff options
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 57b053f424d1..62ec4ba7ecef 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1706,6 +1706,20 @@ static bool acpi_ibm_smbus_match(acpi_handle handle) return false; } +static bool acpi_object_is_system_bus(acpi_handle handle) +{ + acpi_handle tmp; + + if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_SB", &tmp)) && + tmp == handle) + return true; + if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_TZ", &tmp)) && + tmp == handle) + return true; + + return false; +} + static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, int device_type) { @@ -1757,8 +1771,10 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp, acpi_add_id(pnp, ACPI_DOCK_HID); else if (acpi_ibm_smbus_match(handle)) acpi_add_id(pnp, ACPI_SMBUS_IBM_HID); - else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) { - acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */ + else if (list_empty(&pnp->ids) && + acpi_object_is_system_bus(handle)) { + /* \_SB, \_TZ, LNXSYBUS */ + acpi_add_id(pnp, ACPI_BUS_HID); strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME); strcpy(pnp->device_class, ACPI_BUS_CLASS); } |