diff --git a/include/camera/ICameraService.h b/include/camera/ICameraService.h
index cc41efe..194a646 100644
--- a/include/camera/ICameraService.h
+++ b/include/camera/ICameraService.h
@@ -145,7 +145,16 @@
             sp<ICamera>& device) = 0;
 
     /**
-     * Turn on or off a camera's torch mode.
+     * Turn on or off a camera's torch mode. Torch mode will be turned off by
+     * camera service if the lastest client binder that turns it on dies.
+     *
+     * return values:
+     * 0:       on a successful operation.
+     * -ENOSYS: the camera device doesn't support this operation. It it returned
+     *          if and only if android.flash.into.available is false.
+     * -EBUSY:  the camera device is opened.
+     * -EINVAL: camera_id is invalid or clientBinder is NULL when enabling a
+     *          torch mode.
      */
     virtual status_t setTorchMode(const String16& cameraId, bool enabled,
             const sp<IBinder>& clientBinder) = 0;
diff --git a/include/camera/ICameraServiceListener.h b/include/camera/ICameraServiceListener.h
index 9e8b912..709ff31 100644
--- a/include/camera/ICameraServiceListener.h
+++ b/include/camera/ICameraServiceListener.h
@@ -71,18 +71,20 @@
      *
      * Initial status will be transmitted with onTorchStatusChanged immediately
      * after this listener is added to the service listener list.
+     *
+     * The enums should be set to values matching
+     * include/hardware/camera_common.h
      */
     enum TorchStatus {
-        // The camera's torch mode has become available to use via
-        // setTorchMode().
-        TORCH_STATUS_AVAILABLE      = TORCH_MODE_STATUS_AVAILABLE,
         // The camera's torch mode has become not available to use via
         // setTorchMode().
-        TORCH_STATUS_NOT_AVAILABLE  = TORCH_MODE_STATUS_RESOURCE_BUSY,
-        // The camera's torch mode has been turned off by setTorchMode().
-        TORCH_STATUS_OFF            = TORCH_MODE_STATUS_OFF,
-        // The camera's torch mode has been turned on by setTorchMode().
-        TORCH_STATUS_ON             = 0x80000000,
+        TORCH_STATUS_NOT_AVAILABLE  = TORCH_MODE_STATUS_NOT_AVAILABLE,
+        // The camera's torch mode is off and available to be turned on via
+        // setTorchMode().
+        TORCH_STATUS_AVAILABLE_OFF  = TORCH_MODE_STATUS_AVAILABLE_OFF,
+        // The camera's torch mode is on and available to be turned off via
+        // setTorchMode().
+        TORCH_STATUS_AVAILABLE_ON   = TORCH_MODE_STATUS_AVAILABLE_ON,
 
         // Use to initialize variables only
         TORCH_STATUS_UNKNOWN        = 0xFFFFFFFF,