Try avoid re-introducing locking bugs.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
drivers/gpu/drm/qxl/qxl_object.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/qxl/qxl_object.c b/drivers/gpu/drm/qxl/qxl_object.c
index 22748b9566af..90d5e5b7f927 100644
--- a/drivers/gpu/drm/qxl/qxl_object.c
+++ b/drivers/gpu/drm/qxl/qxl_object.c
@@ -162,6 +162,8 @@ int qxl_bo_kmap_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_kunmap_locked(struct qxl_bo *bo)
{
+ dma_resv_assert_held(bo->tbo.base.resv);
+
if (bo->kptr == NULL)
return;
bo->map_count--;
--
2.29.2
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