Commit 0345bae1 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

drm/qxl: add lock asserts to qxl_bo_vmap_locked + qxl_bo_vunmap_locked 



Try avoid re-introducing locking bugs.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Acked-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20210217123213.2199186-12-kraxel@redhat.com
parent b4b27f08

drivers/gpu/drm/qxl/qxl_object.c

+4 −0
Original line number Diff line number Diff line
@@ -162,6 +162,8 @@ int qxl_bo_vmap_locked(struct qxl_bo *bo, struct dma_buf_map *map) 
{

	int r;



	dma_resv_assert_held(bo->tbo.base.resv);



	if (bo->kptr) {

		bo->map_count++;

		goto out;
@@ -236,6 +238,8 @@ void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, 


void qxl_bo_vunmap_locked(struct qxl_bo *bo)

{

	dma_resv_assert_held(bo->tbo.base.resv);



	if (bo->kptr == NULL)

		return;

	bo->map_count--;