diff options
| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-02-19 07:02:19 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-21 00:27:48 +0100 |
| commit | ae3caa80a5d532d334c7a4785d74104e3de5a9ae (patch) | |
| tree | 9194e68e495f1e5f59d976e8d723743d0a6b010b /drivers/acpi/scan.c | |
| parent | ACPI / processor: use acpi_evaluate_ost() to replace open-coded version (diff) | |
| download | linux-ae3caa80a5d532d334c7a4785d74104e3de5a9ae.tar.xz linux-ae3caa80a5d532d334c7a4785d74104e3de5a9ae.zip | |
ACPI: use device name LNXSYBUS.xx for ACPI \_SB and \_TZ objects
Use device name "LNXSYBUS:xx" instead of "device.xx" for ACPI objects
\_SB and \_TZ.
BTW, the original check of "handle == ACPI_ROOT_OBJECT" in statment
"else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT)"
is always false because of the code at the begin of that block.
if (handle == ACPI_ROOT_OBJECT) {
acpi_add_id(pnp, ACPI_SYSTEM_HID);
break;
}
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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); } |