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Subject[Patch v2 5/5] ACPI: use device name LNXSYBUS.xx for ACPI \_SB and \_TZ objects
Date
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>
---
drivers/acpi/scan.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 57b053f..62ec4ba 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);
}
--
1.7.10.4


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