diff options
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 9 | ||||
| -rw-r--r-- | include/drm/drm_atomic.h | 9 |
3 files changed, 27 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 440cfa91162a..c53ecbd9abdd 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -332,8 +332,15 @@ update_connector_routing(struct drm_atomic_state *state, * about is ensuring that userspace can't do anything but shut off the * display on a connector that was destroyed after it's been notified, * not before. + * + * Additionally, we also want to ignore connector registration when + * we're trying to restore an atomic state during system resume since + * there's a chance the connector may have been destroyed during the + * process, but it's better to ignore that then cause + * drm_atomic_helper_resume() to fail. */ - if (drm_connector_is_unregistered(connector) && crtc_state->active) { + if (!state->duplicated && drm_connector_is_unregistered(connector) && + crtc_state->active) { DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", connector->base.id, connector->name); return -EINVAL; @@ -3180,6 +3187,7 @@ drm_atomic_helper_duplicate_state(struct drm_device *dev, return ERR_PTR(-ENOMEM); state->acquire_ctx = ctx; + state->duplicated = true; drm_for_each_crtc(crtc, dev) { struct drm_crtc_state *crtc_state; diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index dc7ac0c60547..5a99135d39cd 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -3097,6 +3097,10 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr, * @port as needed. It is not OK however, to call this function and * drm_dp_atomic_release_vcpi_slots() in the same atomic check phase. * + * When &drm_atomic_state.duplicated is set to %true%, this function will not + * perform any error checking and will instead simply return the previously + * recorded VCPI allocations. + * * See also: * drm_dp_atomic_release_vcpi_slots() * drm_dp_mst_atomic_check() @@ -3181,6 +3185,11 @@ EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots); * drm_dp_atomic_find_vcpi_slots() on the same @port in a single atomic check * phase. * + * When &drm_atomic_state.duplicated is set, this function will not + * modify the VCPI allocations in &drm_dp_mst_topology_state.vcpis, so that + * those VCPI allocations may be restored as-is from the duplicated state. In + * this scenario, this function will always return 0. + * * See also: * drm_dp_atomic_find_vcpi_slots() * drm_dp_mst_atomic_check() diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 3b97b2bfaad9..824a5ed4e216 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -329,6 +329,15 @@ struct drm_atomic_state { bool allow_modeset : 1; bool legacy_cursor_update : 1; bool async_update : 1; + /** + * @duplicated: + * + * Indicates whether or not this atomic state was duplicated using + * drm_atomic_helper_duplicate_state(). Drivers and atomic helpers + * should use this to fixup normal inconsistencies in duplicated + * states. + */ + bool duplicated : 1; struct __drm_planes_state *planes; struct __drm_crtcs_state *crtcs; int num_connector; |