mei: bus: export mei_cldev_enabled function

Let me client device driver query of the device is connected
and hence enabled.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/mei/bus.c

@@ -367,6 +367,19 @@ u8 mei_cldev_ver(const struct mei_cl_device *cldev)
 }
 EXPORT_SYMBOL_GPL(mei_cldev_ver);
 
+/**
+ * mei_cldev_enabled - check whether the device is enabled
+ *
+ * @cldev: mei client device
+ *
+ * Return: true if me client is initialized and connected
+ */
+bool mei_cldev_enabled(struct mei_cl_device *cldev)
+{
+	return cldev->cl && mei_cl_is_connected(cldev->cl);
+}
+EXPORT_SYMBOL_GPL(mei_cldev_enabled);
+
 /**
  * mei_cl_enable_device - enable me client device
  *     create connection with me client

include/linux/mei_cl_bus.h

@@ -93,5 +93,6 @@ void mei_cl_set_drvdata(struct mei_cl_device *device, void *data);
 
 int mei_cl_enable_device(struct mei_cl_device *device);
 int mei_cl_disable_device(struct mei_cl_device *device);
+bool mei_cldev_enabled(struct mei_cl_device *cldev);
 
 #endif /* _LINUX_MEI_CL_BUS_H */