static int i5000_get_devices()

in i5000_edac.c [779:893]

• 85 lines of code
• 10 McCabe index (conditional complexity)

static int i5000_get_devices(struct mem_ctl_info *mci, int dev_idx)
{
	//const struct i5000_dev_info *i5000_dev = &i5000_devs[dev_idx];
	struct i5000_pvt *pvt;
	struct pci_dev *pdev;

	pvt = mci->pvt_info;

	/* Attempt to 'get' the MCH register we want */
	pdev = NULL;
	while (1) {
		pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_INTEL_I5000_DEV16, pdev);

		/* End of list, leave */
		if (pdev == NULL) {
			i5000_printk(KERN_ERR,
				"'system address,Process Bus' "
				"device not found:"
				"vendor 0x%x device 0x%x FUNC 1 "
				"(broken BIOS?)\n",
				PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_INTEL_I5000_DEV16);

			return 1;
		}

		/* Scan for device 16 func 1 */
		if (PCI_FUNC(pdev->devfn) == 1)
			break;
	}

	pvt->branchmap_werrors = pdev;

	/* Attempt to 'get' the MCH register we want */
	pdev = NULL;
	while (1) {
		pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_INTEL_I5000_DEV16, pdev);

		if (pdev == NULL) {
			i5000_printk(KERN_ERR,
				"MC: 'branchmap,control,errors' "
				"device not found:"
				"vendor 0x%x device 0x%x Func 2 "
				"(broken BIOS?)\n",
				PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_INTEL_I5000_DEV16);

			pci_dev_put(pvt->branchmap_werrors);
			return 1;
		}

		/* Scan for device 16 func 1 */
		if (PCI_FUNC(pdev->devfn) == 2)
			break;
	}

	pvt->fsb_error_regs = pdev;

	edac_dbg(1, "System Address, processor bus- PCI Bus ID: %s  %x:%x\n",
		 pci_name(pvt->system_address),
		 pvt->system_address->vendor, pvt->system_address->device);
	edac_dbg(1, "Branchmap, control and errors - PCI Bus ID: %s  %x:%x\n",
		 pci_name(pvt->branchmap_werrors),
		 pvt->branchmap_werrors->vendor,
		 pvt->branchmap_werrors->device);
	edac_dbg(1, "FSB Error Regs - PCI Bus ID: %s  %x:%x\n",
		 pci_name(pvt->fsb_error_regs),
		 pvt->fsb_error_regs->vendor, pvt->fsb_error_regs->device);

	pdev = NULL;
	pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
			PCI_DEVICE_ID_I5000_BRANCH_0, pdev);

	if (pdev == NULL) {
		i5000_printk(KERN_ERR,
			"MC: 'BRANCH 0' device not found:"
			"vendor 0x%x device 0x%x Func 0 (broken BIOS?)\n",
			PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_I5000_BRANCH_0);

		pci_dev_put(pvt->branchmap_werrors);
		pci_dev_put(pvt->fsb_error_regs);
		return 1;
	}

	pvt->branch_0 = pdev;

	/* If this device claims to have more than 2 channels then
	 * fetch Branch 1's information
	 */
	if (pvt->maxch >= CHANNELS_PER_BRANCH) {
		pdev = NULL;
		pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_I5000_BRANCH_1, pdev);

		if (pdev == NULL) {
			i5000_printk(KERN_ERR,
				"MC: 'BRANCH 1' device not found:"
				"vendor 0x%x device 0x%x Func 0 "
				"(broken BIOS?)\n",
				PCI_VENDOR_ID_INTEL,
				PCI_DEVICE_ID_I5000_BRANCH_1);

			pci_dev_put(pvt->branchmap_werrors);
			pci_dev_put(pvt->fsb_error_regs);
			pci_dev_put(pvt->branch_0);
			return 1;
		}

		pvt->branch_1 = pdev;
	}

	return 0;
}