diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 6a2592f7daae..4c950b4cf416 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -1472,19 +1472,19 @@ nouveau_bo_fence_ref(void *sync_obj)
 }
 
 static bool
-nouveau_bo_fence_signalled(void *sync_obj, void *sync_arg)
+nouveau_bo_fence_signalled(void *sync_obj)
 {
 	return nouveau_fence_done(sync_obj);
 }
 
 static int
-nouveau_bo_fence_wait(void *sync_obj, void *sync_arg, bool lazy, bool intr)
+nouveau_bo_fence_wait(void *sync_obj, bool lazy, bool intr)
 {
 	return nouveau_fence_wait(sync_obj, lazy, intr);
 }
 
 static int
-nouveau_bo_fence_flush(void *sync_obj, void *sync_arg)
+nouveau_bo_fence_flush(void *sync_obj)
 {
 	return 0;
 }
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 929be87204da..563c8edcb03b 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -471,13 +471,12 @@ static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_re
 {
 }
 
-static int radeon_sync_obj_wait(void *sync_obj, void *sync_arg,
-				bool lazy, bool interruptible)
+static int radeon_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible)
 {
 	return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible);
 }
 
-static int radeon_sync_obj_flush(void *sync_obj, void *sync_arg)
+static int radeon_sync_obj_flush(void *sync_obj)
 {
 	return 0;
 }
@@ -492,7 +491,7 @@ static void *radeon_sync_obj_ref(void *sync_obj)
 	return radeon_fence_ref((struct radeon_fence *)sync_obj);
 }
 
-static bool radeon_sync_obj_signaled(void *sync_obj, void *sync_arg)
+static bool radeon_sync_obj_signaled(void *sync_obj)
 {
 	return radeon_fence_signaled((struct radeon_fence *)sync_obj);
 }
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 4cb3f493da76..d1e5326d442c 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -543,7 +543,7 @@ queue:
 	spin_unlock(&bdev->fence_lock);
 
 	if (sync_obj) {
-		driver->sync_obj_flush(sync_obj, NULL);
+		driver->sync_obj_flush(sync_obj);
 		driver->sync_obj_unref(&sync_obj);
 	}
 	schedule_delayed_work(&bdev->wq,
@@ -1721,7 +1721,7 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
 
 	while (bo->sync_obj) {
 
-		if (driver->sync_obj_signaled(bo->sync_obj, NULL)) {
+		if (driver->sync_obj_signaled(bo->sync_obj)) {
 			void *tmp_obj = bo->sync_obj;
 			bo->sync_obj = NULL;
 			clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
@@ -1736,7 +1736,7 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
 
 		sync_obj = driver->sync_obj_ref(bo->sync_obj);
 		spin_unlock(&bdev->fence_lock);
-		ret = driver->sync_obj_wait(sync_obj, NULL,
+		ret = driver->sync_obj_wait(sync_obj,
 					    lazy, interruptible);
 		if (unlikely(ret != 0)) {
 			driver->sync_obj_unref(&sync_obj);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
index da12922b6313..ef1109c8fec8 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c
@@ -310,21 +310,20 @@ static void vmw_sync_obj_unref(void **sync_obj)
 	vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj);
 }
 
-static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg)
+static int vmw_sync_obj_flush(void *sync_obj)
 {
 	vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj);
 	return 0;
 }
 
-static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg)
+static bool vmw_sync_obj_signaled(void *sync_obj)
 {
 	return	vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj,
 				       DRM_VMW_FENCE_FLAG_EXEC);
 
 }
 
-static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg,
-			     bool lazy, bool interruptible)
+static int vmw_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible)
 {
 	return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj,
 				  DRM_VMW_FENCE_FLAG_EXEC,
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index fc5fad09dae4..4789beee3b77 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -422,10 +422,10 @@ struct ttm_bo_driver {
 	 * documentation.
 	 */
 
-	bool (*sync_obj_signaled) (void *sync_obj, void *sync_arg);
-	int (*sync_obj_wait) (void *sync_obj, void *sync_arg,
+	bool (*sync_obj_signaled) (void *sync_obj);
+	int (*sync_obj_wait) (void *sync_obj,
 			      bool lazy, bool interruptible);
-	int (*sync_obj_flush) (void *sync_obj, void *sync_arg);
+	int (*sync_obj_flush) (void *sync_obj);
 	void (*sync_obj_unref) (void **sync_obj);
 	void *(*sync_obj_ref) (void *sync_obj);