Commit ccd9fe97 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/ttm: Don't override vm_ops callbacks, if set 



Drivers may want to set their own callbacks for a VM area. Only set
TTM's callbacks if the vm_ops field is clear.

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210525151055.8174-2-tzimmermann@suse.de
parent 8eca89a1

drivers/gpu/drm/ttm/ttm_bo_vm.c

+6 −1
Original line number Diff line number Diff line
@@ -586,6 +586,11 @@ static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_device *bdev, 


static void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *vma)

{

	/*

	 * Drivers may want to override the vm_ops field. Otherwise we

	 * use TTM's default callbacks.

	 */

	if (!vma->vm_ops)

		vma->vm_ops = &ttm_bo_vm_ops;



	/*