diff options
Diffstat (limited to 'drivers/gpu/drm/drm_dp_mst_topology.c')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 2fb84e7f1e69..6dba74416841 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -5105,11 +5105,16 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, if (!found) return 0; - /* This should never happen, as it means we tried to - * set a mode before querying the full_pbn + /* + * This could happen if the sink deasserted its HPD line, but + * the branch device still reports it as attached (PDT != NONE). */ - if (WARN_ON(!port->full_pbn)) + if (!port->full_pbn) { + drm_dbg_atomic(port->mgr->dev, + "[MSTB:%p] [MST PORT:%p] no BW available for the port\n", + port->parent, port); return -EINVAL; + } pbn_used = vcpi->pbn; } else { |