drm/display/drm_dp_tunnel.c

71 		__tun_prn(__tunnel, dbg, _kms, __fmt " (Failed, err: %pe)\n", \
683 	int err;
685 	err = read_tunnel_regs(tunnel->aux, regs);
686 	if (err < 0) {
689 		return err;
762 	int err;
764 	err = read_tunnel_regs(aux, &regs);
765 	if (err)
766 		return ERR_PTR(err);
880 		int err;
889 		err = drm_dp_dpcd_probe(tunnel_iter->aux, DP_DPCD_REV);
890 		if (err) {
892 				"Probe failed, assume disconnected (err %pe)\n",
893 				ERR_PTR(err));
948 	int err;
950 	err = check_tunnel(tunnel);
951 	if (err)
952 		return err;
960 	err = set_bw_alloc_mode(tunnel, true);
961 	if (err)
971 	err = read_and_verify_tunnel_regs(tunnel, &regs,
973 	if (err) {
983 		err = update_group_available_bw(tunnel, &regs);
984 		if (err > 0)
985 			err = 0;
988 	tun_dbg_stat(tunnel, err,
994 	return err;
1008 	int err;
1010 	err = check_tunnel(tunnel);
1011 	if (err)
1012 		return err;
1016 	err = set_bw_alloc_mode(tunnel, false);
1018 	tun_dbg_stat(tunnel, err, "Disabling BW alloc mode");
1020 	return err;
1053 	int err;
1065 	err = clear_bw_req_state(aux);
1066 	if (err < 0)
1067 		return err;
1078 	int err;
1081 		err = -EINVAL;
1090 		err = -EINVAL;
1094 	err = clear_bw_req_state(tunnel->aux);
1095 	if (err)
1099 		err = -EIO;
1109 		err = bw_req_complete(tunnel->aux, &status_changed);
1110 		if (err != -EAGAIN)
1116 			err = read_and_verify_tunnel_regs(tunnel, &regs,
1118 			if (err)
1123 			err = -ETIMEDOUT;
1132 	if (err)
1138 	tun_dbg_stat(tunnel, err, "Allocating %d/%d Mb/s for tunnel: Group alloc:%d/%d Mb/s",
1144 	if (err == -EIO)
1147 	return err;
1162 	int err;
1164 	err = check_tunnel(tunnel);
1165 	if (err)
1166 		return err;
1664 	int err;
1666 	err = resize_bw_array(tunnel_state,
1669 	if (err)
1670 		return err;
1707 	int err;
1733 	err = set_stream_bw(tunnel_state, stream_id, bw);
1734 	if (err)
1735 		return err;