Revert "Revert "drm/panfrost: Use drm_gem_map_offset()""

		      struct drm_file *file_priv)

		      struct drm_file *file_priv)

{

{

	struct drm_panfrost_mmap_bo *args = data;

	struct drm_panfrost_mmap_bo *args = data;

	struct drm_gem_object *gem_obj;

	int ret;

	if (args->flags != 0) {

	if (args->flags != 0) {

		DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);

		DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);

		return -EINVAL;

		return -EINVAL;

	}

	}

	gem_obj = drm_gem_object_lookup(file_priv, args->handle);

	return drm_gem_map_offset(file_priv, dev, args->handle,

	if (!gem_obj) {

				       &args->offset);

		DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);

		return -ENOENT;

	}

	ret = drm_gem_create_mmap_offset(gem_obj);

	if (ret == 0)

		args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);

	drm_gem_object_put_unlocked(gem_obj);

	return ret;

}

}

static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,

static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,