diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index ef4e923a8728..7b16d32b6ff6 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -589,35 +589,3 @@ err_free:
 	put_device(kdev);
 	return ERR_PTR(r);
 }
-
-/**
- * drm_class_device_register - register new device with the DRM sysfs class
- * @dev: device to register
- *
- * Registers a new &struct device within the DRM sysfs class. Essentially only
- * used by ttm to have a place for its global settings. Drivers should never use
- * this.
- */
-int drm_class_device_register(struct device *dev)
-{
-	if (!drm_class || IS_ERR(drm_class))
-		return -ENOENT;
-
-	dev->class = drm_class;
-	return device_register(dev);
-}
-EXPORT_SYMBOL_GPL(drm_class_device_register);
-
-/**
- * drm_class_device_unregister - unregister device with the DRM sysfs class
- * @dev: device to unregister
- *
- * Unregisters a &struct device from the DRM sysfs class. Essentially only used
- * by ttm to have a place for its global settings. Drivers should never use
- * this.
- */
-void drm_class_device_unregister(struct device *dev)
-{
-	return device_unregister(dev);
-}
-EXPORT_SYMBOL_GPL(drm_class_device_unregister);
diff --git a/drivers/gpu/drm/ttm/ttm_module.c b/drivers/gpu/drm/ttm/ttm_module.c
index aa137ead5cc5..3daace105930 100644
--- a/drivers/gpu/drm/ttm/ttm_module.c
+++ b/drivers/gpu/drm/ttm/ttm_module.c
@@ -34,7 +34,6 @@
 #include <linux/pgtable.h>
 #include <linux/sched.h>
 #include <linux/debugfs.h>
-#include <drm/drm_sysfs.h>
 #include <drm/ttm/ttm_caching.h>
 
 #include "ttm_module.h"
diff --git a/include/drm/drm_sysfs.h b/include/drm/drm_sysfs.h
index 96a5d858404b..7695873a9456 100644
--- a/include/drm/drm_sysfs.h
+++ b/include/drm/drm_sysfs.h
@@ -3,13 +3,9 @@
 #define _DRM_SYSFS_H_
 
 struct drm_device;
-struct device;
 struct drm_connector;
 struct drm_property;
 
-int drm_class_device_register(struct device *dev);
-void drm_class_device_unregister(struct device *dev);
-
 void drm_sysfs_hotplug_event(struct drm_device *dev);
 void drm_sysfs_connector_hotplug_event(struct drm_connector *connector);
 void drm_sysfs_connector_property_event(struct drm_connector *connector,