ACPI: attach thermal zone info
Intel menlow driver needs to get the pointer of themal_zone_device
structure of an ACPI thermal zone.
Attach this to each ACPI thermal zone device object.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index d317da5..7400363 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -1101,6 +1101,7 @@
{
int trips = 0;
int result;
+ acpi_status status;
int i;
if (tz->trips.critical.flags.valid)
@@ -1129,6 +1130,15 @@
if (result)
return result;
+ status = acpi_attach_data(tz->device->handle,
+ acpi_bus_private_data_handler,
+ tz->thermal_zone);
+ if (ACPI_FAILURE(status)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Error attaching device data\n"));
+ return -ENODEV;
+ }
+
tz->tz_enabled = 1;
printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n",
@@ -1142,6 +1152,7 @@
sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
thermal_zone_device_unregister(tz->thermal_zone);
tz->thermal_zone = NULL;
+ acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler);
}