drm/qxl: remove unused object_pin/unpin() helpers

These two helpers are unused. Remove them. They rely on
gem_obj->driver_private, which is set to NULL during setup. As this field
isn't used by the driver, anymore, we can remove this assignment as well.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/qxl/qxl_drv.h

@@ -405,9 +405,6 @@ int qxl_gem_object_create(struct qxl_device *qdev, int size,
 			  bool discardable, bool kernel,
 			  struct qxl_surface *surf,
 			  struct drm_gem_object **obj);
-int qxl_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
-			  uint64_t *gpu_addr);
-void qxl_gem_object_unpin(struct drm_gem_object *obj);
 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
 				      struct drm_file *file_priv,
 				      u32 domain,

drivers/gpu/drm/qxl/qxl_gem.c

@@ -101,32 +101,6 @@ int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
 	return 0;
 }
 
-int qxl_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
-			  uint64_t *gpu_addr)
-{
-	struct qxl_bo *qobj = obj->driver_private;
-	int r;
-
-	r = qxl_bo_reserve(qobj, false);
-	if (unlikely(r != 0))
-		return r;
-	r = qxl_bo_pin(qobj, pin_domain, gpu_addr);
-	qxl_bo_unreserve(qobj);
-	return r;
-}
-
-void qxl_gem_object_unpin(struct drm_gem_object *obj)
-{
-	struct qxl_bo *qobj = obj->driver_private;
-	int r;
-
-	r = qxl_bo_reserve(qobj, false);
-	if (likely(r == 0)) {
-		qxl_bo_unpin(qobj);
-		qxl_bo_unreserve(qobj);
-	}
-}
-
 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 {
 	return 0;

drivers/gpu/drm/qxl/qxl_object.c

@@ -98,7 +98,6 @@ int qxl_bo_create(struct qxl_device *qdev,
 		kfree(bo);
 		return r;
 	}
-	bo->gem_base.driver_private = NULL;
 	bo->type = domain;
 	bo->pin_count = pinned ? 1 : 0;
 	bo->surface_id = 0;