MFC: r260063

- Probe with BUS_PROBE_DEFAULT instead of 0.
- Nuke code setting PCI_POWERSTATE_D0; pci(4) already does that for type 0
  devices.
- Use PCIR_BAR instead of a homegrown macro.
- There's no need to keep track of resource IDs.
- Quiesce the interrupt before actually detaching.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

2 files changed, 12 insertions, 22 deletions

diff --git a/sys/dev/iwi/if_iwi.c b/sys/dev/iwi/if_iwi.c
index a3e22fe..e6ee051 100644
--- a/sys/dev/iwi/if_iwi.c
+++ b/sys/dev/iwi/if_iwi.c
@@ -219,7 +219,7 @@ static device_method_t iwi_methods[] = {
 	DEVMETHOD(device_suspend,	iwi_suspend),
 	DEVMETHOD(device_resume,	iwi_resume),
 
-	{ 0, 0 }
+	DEVMETHOD_END
 };
 
 static driver_t iwi_driver = {
@@ -230,7 +230,7 @@ static driver_t iwi_driver = {
 
 static devclass_t iwi_devclass;
 
-DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, 0, 0);
+DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
 
 MODULE_VERSION(iwi, 1);
 
@@ -257,15 +257,12 @@ iwi_probe(device_t dev)
 		if (pci_get_vendor(dev) == ident->vendor &&
 		    pci_get_device(dev) == ident->device) {
 			device_set_desc(dev, ident->name);
-			return 0;
+			return (BUS_PROBE_DEFAULT);
 		}
 	}
 	return ENXIO;
 }
 
-/* Base Address Register */
-#define IWI_PCI_BAR0	0x10
-
 static int
 iwi_attach(device_t dev)
 {
@@ -300,20 +297,13 @@ iwi_attach(device_t dev)
 	callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
 	callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
 
-	if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
-		device_printf(dev, "chip is in D%d power mode "
-		    "-- setting to D0\n", pci_get_powerstate(dev));
-		pci_set_powerstate(dev, PCI_POWERSTATE_D0);
-	}
-
 	pci_write_config(dev, 0x41, 0, 1);
 
 	/* enable bus-mastering */
 	pci_enable_busmaster(dev);
 
-	sc->mem_rid = IWI_PCI_BAR0;
-	sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
-	    RF_ACTIVE);
+	i = PCIR_BAR(0);
+	sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
 	if (sc->mem == NULL) {
 		device_printf(dev, "could not allocate memory resource\n");
 		goto fail;
@@ -322,8 +312,8 @@ iwi_attach(device_t dev)
 	sc->sc_st = rman_get_bustag(sc->mem);
 	sc->sc_sh = rman_get_bushandle(sc->mem);
 
-	sc->irq_rid = 0;
-	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
+	i = 0;
+	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
 	    RF_ACTIVE | RF_SHAREABLE);
 	if (sc->irq == NULL) {
 		device_printf(dev, "could not allocate interrupt resource\n");
@@ -459,6 +449,8 @@ iwi_detach(device_t dev)
 	struct ifnet *ifp = sc->sc_ifp;
 	struct ieee80211com *ic = ifp->if_l2com;
 
+	bus_teardown_intr(dev, sc->irq, sc->sc_ih);
+
 	/* NB: do early to drain any pending tasks */
 	ieee80211_draintask(ic, &sc->sc_radiontask);
 	ieee80211_draintask(ic, &sc->sc_radiofftask);
@@ -480,10 +472,10 @@ iwi_detach(device_t dev)
 	iwi_free_tx_ring(sc, &sc->txq[3]);
 	iwi_free_rx_ring(sc, &sc->rxq);
 
-	bus_teardown_intr(dev, sc->irq, sc->sc_ih);
-	bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
+	bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
 
-	bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
+	bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
+	    sc->mem);
 
 	delete_unrhdr(sc->sc_unr);
 
diff --git a/sys/dev/iwi/if_iwivar.h b/sys/dev/iwi/if_iwivar.h
index 1733677..42ca92e 100644
--- a/sys/dev/iwi/if_iwivar.h
+++ b/sys/dev/iwi/if_iwivar.h
@@ -153,8 +153,6 @@ struct iwi_softc {
 	bus_space_tag_t		sc_st;
 	bus_space_handle_t	sc_sh;
 	void 			*sc_ih;
-	int			mem_rid;
-	int			irq_rid;
 
 	/*
 	 * The card needs external firmware images to work, which is made of a