- snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d",
- dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
+ len = snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d",
+ drm_get_pci_domain(dev), dev->pdev->bus->number,
+ PCI_SLOT(dev->pdev->devfn),
+ PCI_FUNC(dev->pdev->devfn));
+
+ if (len > dev->unique_len)
+ DRM_ERROR("Unique buffer overflowed\n");