diff --git a/drivers/gpu/drm/xe/xe_sync.c b/drivers/gpu/drm/xe/xe_sync.c index 2e72c06fd40d..b0684e6d2047 100644 --- a/drivers/gpu/drm/xe/xe_sync.c +++ b/drivers/gpu/drm/xe/xe_sync.c @@ -85,8 +85,12 @@ static void user_fence_worker(struct work_struct *w) mmput(ufence->mm); } - wake_up_all(&ufence->xe->ufence_wq); + /* + * Wake up waiters only after updating the ufence state, allowing the UMD + * to safely reuse the same ufence without encountering -EBUSY errors. + */ WRITE_ONCE(ufence->signalled, 1); + wake_up_all(&ufence->xe->ufence_wq); user_fence_put(ufence); }