diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 27dc6838533a..15cc189ed1a3 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -907,6 +907,12 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) * * Drivers can use this for building their own atomic commit if they don't have * a pure helper-based modeset implementation. + * + * Since these updates are not synchronized with lockings, only code paths + * called from &drm_mode_config_helper_funcs.atomic_commit_tail can look at the + * legacy state filled out by this helper. Defacto this means this helper and + * the legacy state pointers are only really useful for transitioning an + * existing driver to the atomic world. */ void drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev, |