- Apparently, it's no longer a problem to call shutdown_nice(9) from within

  an interrupt filter (some other drivers in the tree do the same). So
  change the overtemperature and power fail interrupts from handlers in order
  to code and get rid of a !INTR_MPSAFE handlers.
- Mark unused parameters as such.
- Use NULL instead of 0 for pointers.

MFC after:	1 week

1 files changed, 14 insertions, 12 deletions

diff --git a/sys/sparc64/sbus/sbus.c b/sys/sparc64/sbus/sbus.c
index dbf1ccc..6c69e2d 100644
--- a/sys/sparc64/sbus/sbus.c
+++ b/sys/sparc64/sbus/sbus.c
@@ -152,8 +152,8 @@ static void sbus_intr_assign(void *);
 static void sbus_intr_clear(void *);
 static int sbus_find_intrmap(struct sbus_softc *, u_int, bus_addr_t *,
     bus_addr_t *);
-static driver_intr_t sbus_overtemp;
-static driver_intr_t sbus_pwrfail;
+static driver_filter_t sbus_overtemp;
+static driver_filter_t sbus_pwrfail;
 static int sbus_print_res(struct sbus_devinfo *);
 
 static device_method_t sbus_methods[] = {
@@ -199,7 +199,7 @@ static driver_t sbus_driver = {
 
 static devclass_t sbus_devclass;
 
-EARLY_DRIVER_MODULE(sbus, nexus, sbus_driver, sbus_devclass, 0, 0,
+EARLY_DRIVER_MODULE(sbus, nexus, sbus_driver, sbus_devclass, NULL, NULL,
     BUS_PASS_BUS);
 MODULE_DEPEND(sbus, nexus, 1, 1, 1);
 MODULE_VERSION(sbus, 1);
@@ -410,7 +410,7 @@ sbus_attach(device_t dev)
 	    INTVEC(SYSIO_READ8(sc, SBR_THERM_INT_MAP)) != vec ||
 	    intr_vectors[vec].iv_ic != &sbus_ic ||
 	    bus_setup_intr(dev, sc->sc_ot_ires, INTR_TYPE_MISC | INTR_BRIDGE,
-	    NULL, sbus_overtemp, sc, &sc->sc_ot_ihand) != 0)
+	    sbus_overtemp, NULL, sc, &sc->sc_ot_ihand) != 0)
 		panic("%s: failed to set up temperature interrupt", __func__);
 	i = 3;
 	sc->sc_pf_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
@@ -420,7 +420,7 @@ sbus_attach(device_t dev)
 	    INTVEC(SYSIO_READ8(sc, SBR_POWER_INT_MAP)) != vec ||
 	    intr_vectors[vec].iv_ic != &sbus_ic ||
 	    bus_setup_intr(dev, sc->sc_pf_ires, INTR_TYPE_MISC | INTR_BRIDGE,
-	    NULL, sbus_pwrfail, sc, &sc->sc_pf_ihand) != 0)
+	    sbus_pwrfail, NULL, sc, &sc->sc_pf_ihand) != 0)
 		panic("%s: failed to set up power fail interrupt", __func__);
 
 	/* Initialize the counter-timer. */
@@ -897,31 +897,33 @@ sbus_get_devinfo(device_t bus, device_t child)
  * This handles the interrupt and powers off the machine.
  * The same needs to be done to PCI controller drivers.
  */
-static void
-sbus_overtemp(void *arg)
+static int
+sbus_overtemp(void *arg __unused)
 {
 	static int shutdown;
 
 	/* As the interrupt is cleared we may be called multiple times. */
 	if (shutdown != 0)
-		return;
+		return (FILTER_HANDLED);
 	shutdown++;
 	printf("DANGER: OVER TEMPERATURE detected\nShutting down NOW.\n");
 	shutdown_nice(RB_POWEROFF);
+	return (FILTER_HANDLED);
 }
 
 /* Try to shut down in time in case of power failure. */
-static void
-sbus_pwrfail(void *arg)
+static int
+sbus_pwrfail(void *arg __unused)
 {
 	static int shutdown;
 
 	/* As the interrupt is cleared we may be called multiple times. */
 	if (shutdown != 0)
-		return;
+		return (FILTER_HANDLED);
 	shutdown++;
 	printf("Power failure detected\nShutting down NOW.\n");
-	shutdown_nice(0);
+	shutdown_nice(FILTER_HANDLED);
+	return (FILTER_HANDLED);
 }
 
 static int