Index: sys/arm/versatile/versatile_pci.c
===================================================================
--- sys/arm/versatile/versatile_pci.c
+++ sys/arm/versatile/versatile_pci.c
@@ -266,7 +266,7 @@
 		versatile_pci_conf_write_4((slot << 11) + PCIR_COMMAND, val);
 	}
 
-	device_add_child(dev, "pci", 0);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/arm/xscale/i80321/i80321_pci.c
===================================================================
--- sys/arm/xscale/i80321/i80321_pci.c
+++ sys/arm/xscale/i80321/i80321_pci.c
@@ -117,7 +117,7 @@
 	if (rman_init(&sc->sc_irq_rman) != 0 ||
 	    rman_manage_region(&sc->sc_irq_rman, 26, 32) != 0)
 		panic("i80321_pci_probe: failed to set up IRQ rman");
-	device_add_child(dev, "pci",busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/arm/xscale/i8134x/i81342_pci.c
===================================================================
--- sys/arm/xscale/i8134x/i81342_pci.c
+++ sys/arm/xscale/i8134x/i81342_pci.c
@@ -209,7 +209,7 @@
 	}
 	bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR,
 	    bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ISR) & ATUX_ISR_ERRMSK);
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/dev/pci/pci_pci.c
===================================================================
--- sys/dev/pci/pci_pci.c
+++ sys/dev/pci/pci_pci.c
@@ -1082,7 +1082,7 @@
     pcib_attach_common(dev);
     sc = device_get_softc(dev);
     if (sc->bus.sec != 0) {
-	child = device_add_child(dev, "pci", sc->bus.sec);
+	child = device_add_child(dev, "pci", -1);
 	if (child != NULL)
 	    return(bus_generic_attach(dev));
     }
Index: sys/mips/adm5120/admpci.c
===================================================================
--- sys/mips/adm5120/admpci.c
+++ sys/mips/adm5120/admpci.c
@@ -181,7 +181,7 @@
 		panic("bus_space_map failed");
 	}
 
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/atheros/ar71xx_pci.c
===================================================================
--- sys/mips/atheros/ar71xx_pci.c
+++ sys/mips/atheros/ar71xx_pci.c
@@ -462,7 +462,7 @@
 	ar71xx_pci_slot_fixup(dev, 0, 18, 0);
 #endif	/* AR71XX_ATH_EEPROM */
 
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/atheros/ar724x_pci.c
===================================================================
--- sys/mips/atheros/ar724x_pci.c
+++ sys/mips/atheros/ar724x_pci.c
@@ -429,7 +429,7 @@
 	    | PCIM_CMD_SERRESPEN | PCIM_CMD_BACKTOBACK
 	    | PCIM_CMD_PERRESPEN | PCIM_CMD_MWRICEN, 2);
 
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/atheros/qca955x_pci.c
===================================================================
--- sys/mips/atheros/qca955x_pci.c
+++ sys/mips/atheros/qca955x_pci.c
@@ -362,7 +362,7 @@
 	    | PCIM_CMD_SERRESPEN | PCIM_CMD_BACKTOBACK
 	    | PCIM_CMD_PERRESPEN | PCIM_CMD_MWRICEN, 2);
 
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/idt/idtpci.c
===================================================================
--- sys/mips/idt/idtpci.c
+++ sys/mips/idt/idtpci.c
@@ -275,7 +275,7 @@
 	        PCI_IRQ_END) != 0)
 		panic("idtpci_attach: failed to set up IRQ rman");
 
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/malta/gt_pci.c
===================================================================
--- sys/mips/malta/gt_pci.c
+++ sys/mips/malta/gt_pci.c
@@ -415,7 +415,7 @@
 	}
 
 	/* Initialize memory and i/o rmans. */
-	device_add_child(dev, "pci", busno);
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }
 
Index: sys/mips/nlm/xlp_pci.c
===================================================================
--- sys/mips/nlm/xlp_pci.c
+++ sys/mips/nlm/xlp_pci.c
@@ -314,7 +314,7 @@
 		for (link = 0; link < 4; link++)
 			xlp_pcib_hardware_swap_enable(node, link);
 
-	device_add_child(dev, "pci", 0);
+	device_add_child(dev, "pci", -1);
 	bus_generic_attach(dev);
 	return (0);
 }
Index: sys/mips/rmi/xlr_pci.c
===================================================================
--- sys/mips/rmi/xlr_pci.c
+++ sys/mips/rmi/xlr_pci.c
@@ -306,7 +306,7 @@
 		    0xff, 0x7fffffff, 0, NULL, NULL, &sc->sc_pci_dmat) != 0)
 			panic("%s: bus_dma_tag_create failed", __func__);
 	}
-	device_add_child(dev, "pci", 0);
+	device_add_child(dev, "pci", -1);
 	bus_generic_attach(dev);
 	return (0);
 }
Index: sys/x86/x86/mptable_pci.c
===================================================================
--- sys/x86/x86/mptable_pci.c
+++ sys/x86/x86/mptable_pci.c
@@ -69,7 +69,7 @@
 #ifdef NEW_PCIB
 	mptable_pci_host_res_init(dev);
 #endif
-	device_add_child(dev, "pci", pcib_get_bus(dev));
+	device_add_child(dev, "pci", -1);
 	return (bus_generic_attach(dev));
 }