Index: stable/11/sys/dev/si/si_isa.c
===================================================================
--- stable/11/sys/dev/si/si_isa.c
+++ stable/11/sys/dev/si/si_isa.c
@@ -65,7 +65,7 @@
 		device_printf(dev, "cannot allocate memory resource\n");
 		return ENXIO;
 	}
-	paddr = (caddr_t)rman_get_start(sc->sc_mem_res);/* physical */
+	paddr = (caddr_t)(uintptr_t)rman_get_start(sc->sc_mem_res);/* physical */
 	maddr = rman_get_virtual(sc->sc_mem_res);	/* in kvm */
 
 	DPRINT((0, DBG_AUTOBOOT, "si%d: probe at virtual=0x%x physical=0x%x\n",
@@ -279,7 +279,7 @@
 		device_printf(dev, "couldn't map memory\n");
 		goto fail;
 	}
-	sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
+	sc->sc_paddr = (caddr_t)(uintptr_t)rman_get_start(sc->sc_mem_res);
 	sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
 
 	sc->sc_irq_rid = 0;
Index: stable/11/sys/dev/si/si_pci.c
===================================================================
--- stable/11/sys/dev/si/si_pci.c
+++ stable/11/sys/dev/si/si_pci.c
@@ -86,7 +86,7 @@
 		device_printf(dev, "couldn't map memory\n");
 		goto fail;
 	}
-	sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_mem_res);
+	sc->sc_paddr = (caddr_t)(uintptr_t)rman_get_start(sc->sc_mem_res);
 	sc->sc_maddr = rman_get_virtual(sc->sc_mem_res);
 
 	sc->sc_irq_rid = 0;