drm/armada: Use .dumb_map_offset and .dumb_destroy defaults

This driver can use the drm_driver.dumb_destroy and
drm_driver.dumb_map_offset defaults, so no need to set them.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1502986891-36764-3-git-send-email-noralf@tronnes.org

drivers/gpu/drm/armada/armada_drv.c

@@ -70,8 +70,6 @@ static struct drm_driver armada_drm_driver = {
 	.gem_prime_export	= armada_gem_prime_export,
 	.gem_prime_import	= armada_gem_prime_import,
 	.dumb_create		= armada_gem_dumb_create,
-	.dumb_map_offset	= armada_gem_dumb_map_offset,
-	.dumb_destroy		= armada_gem_dumb_destroy,
 	.gem_vm_ops		= &armada_gem_vm_ops,
 	.major			= 1,
 	.minor			= 0,

drivers/gpu/drm/armada/armada_gem.c

@@ -270,42 +270,6 @@ int armada_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
 	return ret;
 }
 
-int armada_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
-	uint32_t handle, uint64_t *offset)
-{
-	struct armada_gem_object *obj;
-	int ret = 0;
-
-	obj = armada_gem_object_lookup(file, handle);
-	if (!obj) {
-		DRM_ERROR("failed to lookup gem object\n");
-		return -EINVAL;
-	}
-
-	/* Don't allow imported objects to be mapped */
-	if (obj->obj.import_attach) {
-		ret = -EINVAL;
-		goto err_unref;
-	}
-
-	ret = drm_gem_create_mmap_offset(&obj->obj);
-	if (ret == 0) {
-		*offset = drm_vma_node_offset_addr(&obj->obj.vma_node);
-		DRM_DEBUG_DRIVER("handle %#x offset %llx\n", handle, *offset);
-	}
-
- err_unref:
-	drm_gem_object_unreference_unlocked(&obj->obj);
-
-	return ret;
-}
-
-int armada_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
-	uint32_t handle)
-{
-	return drm_gem_handle_delete(file, handle);
-}
-
 /* Private driver gem ioctls */
 int armada_gem_create_ioctl(struct drm_device *dev, void *data,
 	struct drm_file *file)

drivers/gpu/drm/armada/armada_gem.h

@@ -35,10 +35,6 @@ struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
 	size_t);
 int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
 	struct drm_mode_create_dumb *);
-int armada_gem_dumb_map_offset(struct drm_file *, struct drm_device *,
-	uint32_t, uint64_t *);
-int armada_gem_dumb_destroy(struct drm_file *, struct drm_device *,
-	uint32_t);
 struct dma_buf *armada_gem_prime_export(struct drm_device *dev,
 	struct drm_gem_object *obj, int flags);
 struct drm_gem_object *armada_gem_prime_import(struct drm_device *,