static int qeth_hardsetup_card()

in net/qeth_core_main.c [5241:5383]

• 130 lines of code
• 31 McCabe index (conditional complexity)

static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
{
	int retries = 3;
	int rc;

	QETH_CARD_TEXT(card, 2, "hrdsetup");
	atomic_set(&card->force_alloc_skb, 0);
	rc = qeth_update_from_chp_desc(card);
	if (rc)
		return rc;
retry:
	if (retries < 3)
		QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
				 CARD_DEVID(card));
	rc = qeth_qdio_clear_card(card, !IS_IQD(card));
	qeth_stop_channel(&card->data);
	qeth_stop_channel(&card->write);
	qeth_stop_channel(&card->read);
	qdio_free(CARD_DDEV(card));

	rc = qeth_start_channel(&card->read);
	if (rc)
		goto retriable;
	rc = qeth_start_channel(&card->write);
	if (rc)
		goto retriable;
	rc = qeth_start_channel(&card->data);
	if (rc)
		goto retriable;
retriable:
	if (rc == -ERESTARTSYS) {
		QETH_CARD_TEXT(card, 2, "break1");
		return rc;
	} else if (rc) {
		QETH_CARD_TEXT_(card, 2, "1err%d", rc);
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}

	qeth_determine_capabilities(card);
	qeth_read_ccw_conf_data(card);
	qeth_idx_init(card);

	rc = qeth_idx_activate_read_channel(card);
	if (rc == -EINTR) {
		QETH_CARD_TEXT(card, 2, "break2");
		return rc;
	} else if (rc) {
		QETH_CARD_TEXT_(card, 2, "3err%d", rc);
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}

	rc = qeth_idx_activate_write_channel(card);
	if (rc == -EINTR) {
		QETH_CARD_TEXT(card, 2, "break3");
		return rc;
	} else if (rc) {
		QETH_CARD_TEXT_(card, 2, "4err%d", rc);
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	card->read_or_write_problem = 0;
	rc = qeth_mpc_initialize(card);
	if (rc) {
		QETH_CARD_TEXT_(card, 2, "5err%d", rc);
		goto out;
	}

	rc = qeth_send_startlan(card);
	if (rc) {
		QETH_CARD_TEXT_(card, 2, "6err%d", rc);
		if (rc == -ENETDOWN) {
			dev_warn(&card->gdev->dev, "The LAN is offline\n");
			*carrier_ok = false;
		} else {
			goto out;
		}
	} else {
		*carrier_ok = true;
	}

	card->options.ipa4.supported = 0;
	card->options.ipa6.supported = 0;
	card->options.adp.supported = 0;
	card->options.sbp.supported_funcs = 0;
	card->info.diagass_support = 0;
	rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
	if (rc == -ENOMEM)
		goto out;
	if (qeth_is_supported(card, IPA_IPV6)) {
		rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
		if (rc == -ENOMEM)
			goto out;
	}
	if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
		rc = qeth_query_setadapterparms(card);
		if (rc < 0) {
			QETH_CARD_TEXT_(card, 2, "7err%d", rc);
			goto out;
		}
	}
	if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
		rc = qeth_query_setdiagass(card);
		if (rc)
			QETH_CARD_TEXT_(card, 2, "8err%d", rc);
	}

	qeth_trace_features(card);

	if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
	    (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
		card->info.hwtrap = 0;

	if (card->options.isolation != ISOLATION_MODE_NONE) {
		rc = qeth_setadpparms_set_access_ctrl(card,
						      card->options.isolation);
		if (rc)
			goto out;
	}

	qeth_init_link_info(card);

	rc = qeth_init_qdio_queues(card);
	if (rc) {
		QETH_CARD_TEXT_(card, 2, "9err%d", rc);
		goto out;
	}

	return 0;
out:
	dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
		"an error on the device\n");
	QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
			 CARD_DEVID(card), rc);
	return rc;
}