In the conversion to drop drm_modeset_lock_all and the magic implicit
context I failed to realize that _resume starts out with a pile of
state copies, but not with the locks. And hence drm_atomic_commit
won't grab these for us.
Cc: Jyri Sarha <jsarha@xxxxxx>
Fixes: a5b8444e289c ("drm/atomic-helper: remove modeset_lock_all from helper_resume")
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
Needs to be applied to drm-misc-fixes for 4.12.
-Daniel
---
drivers/gpu/drm/drm_atomic_helper.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index af07368846e0..a61291c29567 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2669,7 +2669,12 @@ int drm_atomic_helper_resume(struct drm_device *dev,
drm_modeset_acquire_init(&ctx, 0);
while (1) {
+ err = drm_modeset_lock_all_ctx(dev, &ctx);
+ if (err)
+ goto out;
+
err = drm_atomic_helper_commit_duplicated_state(state, &ctx);
+out:
if (err != -EDEADLK)
break;
--
2.11.0
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