This will make sure we get a lockdep spat in all cases
even if the context is a complete garbage pointer.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c
index 9abee87c1501..7c9ca2381d78 100644
--- a/drivers/gpu/drm/drm_modeset_lock.c
+++ b/drivers/gpu/drm/drm_modeset_lock.c
@@ -305,6 +305,8 @@ static inline int modeset_lock(struct drm_modeset_lock *lock,
WARN_ON(ctx->contended);
if (ctx->trylock_only) {
+ lockdep_assert_held(&ctx->ww_ctx);
+
if (!ww_mutex_trylock(&lock->mutex))
return -EBUSY;
else
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