[PATCH 1/3] ACPI/Thermal: Remove the unused lock of struct acpi_thermal

[tianyu.lan@intel.com]

From: Lan Tianyu <tianyu.lan@intel.com>

The acpi_thermal->lock now just is initialized when thermal zone device
is added and destroyed when thermal zone is removed. Never being used
any other places. So remove it.

Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
---
 drivers/acpi/thermal.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index a3e38a0..850818d 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -190,7 +190,6 @@ struct acpi_thermal {
 	struct thermal_zone_device *thermal_zone;
 	int tz_enabled;
 	int kelvin_offset;
-	struct mutex lock;
 };
 
 /* --------------------------------------------------------------------------
@@ -1088,8 +1087,6 @@ static int acpi_thermal_add(struct acpi_device *device)
 	strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
 	device->driver_data = tz;
-	mutex_init(&tz->lock);
-
 
 	result = acpi_thermal_get_info(tz);
 	if (result)
@@ -1122,7 +1119,6 @@ static int acpi_thermal_remove(struct acpi_device *device)
 	tz = acpi_driver_data(device);
 
 	acpi_thermal_unregister_thermal_zone(tz);
-	mutex_destroy(&tz->lock);
 	kfree(tz);
 	return 0;
 }
-- 
1.8.4.rc0.1.g8f6a3e5.dirty