--- zzzz-none-000/linux-3.10.107/arch/mips/pci/pci-octeon.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/pci/pci-octeon.c	2021-11-10 11:53:54.000000000 +0000
@@ -586,15 +586,16 @@
 	else
 		octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_BIG;
 
-	/* PCI I/O and PCI MEM values */
-	set_io_port_base(OCTEON_PCI_IOSPACE_BASE);
-	ioport_resource.start = 0;
-	ioport_resource.end = OCTEON_PCI_IOSPACE_SIZE - 1;
 	if (!octeon_is_pci_host()) {
 		pr_notice("Not in host mode, PCI Controller not initialized\n");
 		return 0;
 	}
 
+	/* PCI I/O and PCI MEM values */
+	set_io_port_base(OCTEON_PCI_IOSPACE_BASE);
+	ioport_resource.start = 0;
+	ioport_resource.end = OCTEON_PCI_IOSPACE_SIZE - 1;
+
 	pr_notice("%s Octeon big bar support\n",
 		  (octeon_dma_bar_type ==
 		  OCTEON_DMA_BAR_TYPE_BIG) ? "Enabling" : "Disabling");