Index: sys/dev/virtio/pci/virtio_pci.c
===================================================================
--- sys/dev/virtio/pci/virtio_pci.c
+++ sys/dev/virtio/pci/virtio_pci.c
@@ -273,20 +273,20 @@
 	return (BUS_PROBE_DEFAULT);
 }
 
-static int
-vtpci_attach_probe_msix(device_t dev, struct vtpci_softc *sc)
+static bool
+vtpci_probe_msix(device_t dev, struct vtpci_softc *sc)
 {
 	int rid, table_rid;
 
 	if (pci_find_cap(dev, PCIY_MSIX, NULL) != 0)
-		return (1);
+		return (false);
 
 	rid = table_rid = pci_msix_table_bar(dev);
 	if (rid != PCIR_BAR(0)) {
 		sc->vtpci_msix_table_res = bus_alloc_resource_any(
 		    dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
 		if (sc->vtpci_msix_table_res == NULL)
-			return (1);
+			return (false);
 	}
 
 	rid = pci_msix_pba_bar(dev);
@@ -294,10 +294,10 @@
 		sc->vtpci_msix_pba_res = bus_alloc_resource_any(
 		    dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
 		if (sc->vtpci_msix_pba_res == NULL)
-			return (1);
+			return (false);
 	}
 
-	return (0);
+	return (true);
 }
 
 static int
@@ -332,7 +332,7 @@
 	if (pci_find_cap(dev, PCIY_MSI, NULL) != 0)
 		sc->vtpci_flags |= VTPCI_FLAG_NO_MSI;
 
-	if (vtpci_attach_probe_msix(dev, sc) != 0)
+	if (!vtpci_probe_msix(dev, sc))
 		sc->vtpci_flags |= VTPCI_FLAG_NO_MSIX;
 
 	vtpci_reset(sc);