All current uses of pci_set_powerstate are bogus, at least in theory.

However, they are presently necessary due to bigger bogusness in the
pci bus layer not doing the right thing on suspend/resume or on
initial device probe.  This is exactly the sort of thing that the
BURN_BRIDGES option was invented for.  Mark all of them as
BURN_BRIDGES.  As soon as I have the powerstate stuff properly
integrated into the pci bus code, I intend to remove all these
workarounds.

sys/dev/firewire/fwohci_pci.c

@@ -403,9 +403,11 @@ fwohci_pci_resume(device_t dev)
 {
 	fwohci_softc_t *sc = device_get_softc(dev);
 
+#ifndef BURN_BRIDGES
 	device_printf(dev, "fwohci_pci_resume: power_state = 0x%08x\n",
 					pci_get_powerstate(dev));
 	pci_set_powerstate(dev, PCI_POWERSTATE_D0);
+#endif
 	fwohci_pci_init(dev);
 	fwohci_resume(sc, dev);
 	return 0;

sys/dev/fxp/if_fxp.c

@@ -193,7 +193,9 @@ static void		fxp_intr_body(struct fxp_softc *sc, struct ifnet *ifp,
 static void 		fxp_init(void *xsc);
 static void 		fxp_init_body(struct fxp_softc *sc);
 static void 		fxp_tick(void *xsc);
+#ifndef BURN_BRIDGES
 static void		fxp_powerstate_d0(device_t dev);
+#endif
 static void 		fxp_start(struct ifnet *ifp);
 static void 		fxp_start_body(struct ifnet *ifp);
 static void		fxp_stop(struct fxp_softc *sc);
@@ -335,6 +337,7 @@ fxp_probe(device_t dev)
 	return (ENXIO);
 }
 
+#ifndef BURN_BRIDGES
 static void
 fxp_powerstate_d0(device_t dev)
 {
@@ -360,6 +363,7 @@ fxp_powerstate_d0(device_t dev)
 	}
 #endif
 }
+#endif
 
 static void
 fxp_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
@@ -401,9 +405,9 @@ fxp_attach(device_t dev)
 	 */
 	pci_enable_busmaster(dev);
 	val = pci_read_config(dev, PCIR_COMMAND, 2);
-
+#ifndef BURN_BRIDGES
 	fxp_powerstate_d0(dev);
-
+#endif
 	/*
 	 * Figure out which we should try first - memory mapping or i/o mapping?
 	 * We default to memory mapping. Then we accept an override from the
@@ -999,9 +1003,9 @@ fxp_resume(device_t dev)
 
 	FXP_LOCK(sc);
 	s = splimp();
-
+#ifndef BURN_BRIDGES
 	fxp_powerstate_d0(dev);
-
+#endif
 	/* better way to do this? */
 	for (i = 0; i < 5; i++)
 		pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4);

sys/dev/lge/if_lge.c

@@ -501,7 +501,7 @@ lge_attach(dev)
 	sc = device_get_softc(dev);
 	unit = device_get_unit(dev);
 	bzero(sc, sizeof(struct lge_softc));
-
+#ifndef BURN_BRIDGES
 	/*
 	 * Handle power management nonsense.
 	 */
@@ -524,7 +524,7 @@ lge_attach(dev)
 		pci_write_config(dev, LGE_PCI_LOMEM, membase, 4);
 		pci_write_config(dev, LGE_PCI_INTLINE, irq, 4);
 	}
-
+#endif
 	/*
 	 * Map control/status registers.
 	 */

sys/dev/nge/if_nge.c

@@ -835,7 +835,7 @@ nge_attach(dev)
 
 	mtx_init(&sc->nge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 	    MTX_DEF | MTX_RECURSE);
-
+#ifndef BURN_BRIDGES
 	/*
 	 * Handle power management nonsense.
 	 */
@@ -858,7 +858,7 @@ nge_attach(dev)
 		pci_write_config(dev, NGE_PCI_LOMEM, membase, 4);
 		pci_write_config(dev, NGE_PCI_INTLINE, irq, 4);
 	}
-
+#endif
 	/*
 	 * Map control/status registers.
 	 */

sys/dev/pccbb/pccbb.c

@@ -585,6 +585,7 @@ cbb_chipinit(struct cbb_softc *sc)
 	pci_write_config(sc->dev, CBBR_IOLIMIT1, 0, 4);
 }
 
+#ifndef BURN_BRIDGES
 static void
 cbb_powerstate_d0(device_t dev)
 {
@@ -606,6 +607,7 @@ cbb_powerstate_d0(device_t dev)
 		pci_write_config(dev, PCIR_INTLINE, irq, 4);
 	}
 }
+#endif
 
 /*
  * Print out the config space
@@ -640,10 +642,9 @@ cbb_attach(device_t brdev)
 	sc->subbus = pci_read_config(brdev, PCIR_SUBBUS_2, 1);
 	SLIST_INIT(&sc->rl);
 	STAILQ_INIT(&sc->intr_handlers);
-
+#ifndef	BURN_BRIDGES
 	cbb_powerstate_d0(brdev);
 
-#ifndef	BURN_BRIDGES
 	/*
 	 * The PCI bus code should assign us memory in the absense
 	 * of the BIOS doing so.  However, 'should' isn't 'is,' so we kludge

sys/dev/txp/if_txp.c

@@ -223,7 +223,7 @@ txp_attach(dev)
 
 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
 	    MTX_DEF | MTX_RECURSE);
-
+#ifndef BURN_BRIDGES
 	/*
 	 * Handle power management nonsense.
 	 */
@@ -245,7 +245,7 @@ txp_attach(dev)
 		pci_write_config(dev, TXP_PCI_LOMEM, membase, 4);
 		pci_write_config(dev, TXP_PCI_INTLINE, irq, 4);
 	}
-
+#endif
 	/*
 	 * Map control/status registers.
 	 */