static int jmb38x_ms_probe()

in host/jmb38x_ms.c [898:967]

• 56 lines of code
• 11 McCabe index (conditional complexity)

static int jmb38x_ms_probe(struct pci_dev *pdev,
			   const struct pci_device_id *dev_id)
{
	struct jmb38x_ms *jm;
	int pci_dev_busy = 0;
	int rc, cnt;

	rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
	if (rc)
		return rc;

	rc = pci_enable_device(pdev);
	if (rc)
		return rc;

	pci_set_master(pdev);

	rc = pci_request_regions(pdev, DRIVER_NAME);
	if (rc) {
		pci_dev_busy = 1;
		goto err_out;
	}

	jmb38x_ms_pmos(pdev, 1);

	cnt = jmb38x_ms_count_slots(pdev);
	if (!cnt) {
		rc = -ENODEV;
		pci_dev_busy = 1;
		goto err_out_int;
	}

	jm = kzalloc(struct_size(jm, hosts, cnt), GFP_KERNEL);
	if (!jm) {
		rc = -ENOMEM;
		goto err_out_int;
	}

	jm->pdev = pdev;
	jm->host_cnt = cnt;
	pci_set_drvdata(pdev, jm);

	for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
		jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt);
		if (!jm->hosts[cnt])
			break;

		rc = memstick_add_host(jm->hosts[cnt]);

		if (rc) {
			jmb38x_ms_free_host(jm->hosts[cnt]);
			jm->hosts[cnt] = NULL;
			break;
		}
	}

	if (cnt)
		return 0;

	rc = -ENODEV;

	pci_set_drvdata(pdev, NULL);
	kfree(jm);
err_out_int:
	pci_release_regions(pdev);
err_out:
	if (!pci_dev_busy)
		pci_disable_device(pdev);
	return rc;
}