drm/atomic: Make sure lock is held in trylock contexts.
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@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c
index fba321c..6675b14 100644
--- a/drivers/gpu/drm/drm_modeset_lock.c
+++ b/drivers/gpu/drm/drm_modeset_lock.c
@@ -307,6 +307,8 @@
WARN_ON(ctx->contended);
if (ctx->trylock_only) {
+ lockdep_assert_held(&ctx->ww_ctx);
+
if (!ww_mutex_trylock(&lock->mutex))
return -EBUSY;
else
