Long running dma-fences are not allowed to be exported, a drm_syncobj is
designed to be exported to the user, so add a warn if drm_syncobj
install long running dna-fences as this is not allowed.
Signed-off-by: Matthew Brost <matthew.brsot@xxxxxxxxx>
---
drivers/gpu/drm/drm_syncobj.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 0c2be8360525..7c304cd7d037 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -291,6 +291,7 @@ void drm_syncobj_add_point(struct drm_syncobj *syncobj,
struct syncobj_wait_entry *cur, *tmp;
struct dma_fence *prev;
+ WARN_ON_ONCE(dma_fence_is_lr(fence));
dma_fence_get(fence);
spin_lock(&syncobj->lock);
@@ -325,8 +326,10 @@ void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
struct dma_fence *old_fence;
struct syncobj_wait_entry *cur, *tmp;
- if (fence)
+ if (fence) {
+ WARN_ON_ONCE(dma_fence_is_lr(fence));
dma_fence_get(fence);
+ }
spin_lock(&syncobj->lock);
--
2.34.1
