Re: [2.6.19 PATCH 1/7] ehea: interface to network stack

Thomas Klein [off-list ref] :
[...]

Somehow I don't get your point concerning the usage of 'k'. We need another
iterator as the for loops using 'k' use 'i' as their terminating condition.

Something like the code below perhaps (with more local variables maybe):

static int ehea_reg_interrupts(struct net_device *dev)
{
	struct ehea_port *port = netdev_priv(dev);
	struct ehea_port_res *pr;
	int i, ret;

	for (i = 0; i < port->num_def_qps; i++) {
		pr = &port->port_res[i];
		snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
			 , "%s-recv%d", dev->name, i);
		ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
					  ehea_recv_irq_handler, SA_INTERRUPT,
					  pr->int_recv_name, pr);
		if (ret) {
			ehea_error("failed registering irq for ehea_recv_int:"
				   "port_res_nr:%d, ist=%X", i,
				   pr->recv_eq->attr.ist1);
			goto err_free_irq_recv_eq_0;
		}
		if (netif_msg_ifup(port))
			ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
				  "registered", pr->recv_eq->attr.ist1, i);
	}

	snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1,
		 "%s-aff", dev->name);
	ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
				  ehea_qp_aff_irq_handler,
				  SA_INTERRUPT, port->int_aff_name, port);
	if (ret) {
		ehea_error("failed registering irq for qp_aff_irq_handler:"
			   " ist=%X", port->qp_eq->attr.ist1);
		goto err_free_irq_recv_eq_0;
	}
	if (netif_msg_ifup(port))
		ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
			  "registered", port->qp_eq->attr.ist1);

	for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
		pr = &port->port_res[i];
		snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
			 "%s-send%d", dev->name, i);
		ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
					  ehea_send_irq_handler, SA_INTERRUPT,
					  pr->int_send_name, pr);
		if (ret) {
			ehea_error("failed registering irq for ehea_send"
				   " port_res_nr:%d, ist=%X", i,
				   pr->send_eq->attr.ist1);
			goto err_free_irq_send_eq_1;
		}
		if (netif_msg_ifup(port))
			ehea_info("irq_handle 0x%X for function ehea_send_int "
				  "%d registered", pr->send_eq->attr.ist1, i);
	}
out:
	return ret;

err_free_irq_send_eq_1:
	// Post-dec works with unsigned int too.
	while (i-- > 0) {
		u32 ist = port->port_res[i].send_eq->attr.ist1;
		ibmebus_free_irq(NULL, ist, &port->port_res[i]);
	}
	ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
	i = port->num_def_qps;
err_free_irq_recv_eq_0:
	while (i-- > 0) {
		u32 ist = port->port_res[i].recv_eq->attr.ist1;
		ibmebus_free_irq(NULL, ist, &port->port_res[k]);
	}
	goto out;
}