Reset clock after atrtc(4) is properly resumed.

sys/amd64/acpica/acpi_wakeup.c

@@ -291,7 +291,6 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state)
 		if (!CPU_EMPTY(&wakeup_cpus))
 			acpi_wakeup_cpus(sc, &wakeup_cpus);
 #endif
-		acpi_resync_clock(sc);
 		ret = 0;
 	}
 

sys/dev/acpica/acpi.c

@@ -152,6 +152,7 @@ static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
 static void	acpi_shutdown_final(void *arg, int howto);
 static void	acpi_enable_fixed_events(struct acpi_softc *sc);
 static BOOLEAN	acpi_has_hid(ACPI_HANDLE handle);
+static void	acpi_resync_clock(struct acpi_softc *sc);
 static int	acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
 static int	acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
 static int	acpi_wake_prep_walk(int sstate);
@@ -277,11 +278,13 @@ TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RDTUN,
     &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
 
+#ifdef __amd64__
 /* Reset system clock while resuming.  XXX Remove once tested. */
 static int acpi_reset_clock = 1;
 TUNABLE_INT("debug.acpi.reset_clock", &acpi_reset_clock);
 SYSCTL_INT(_debug_acpi, OID_AUTO, reset_clock, CTLFLAG_RW,
     &acpi_reset_clock, 1, "Reset system clock while resuming.");
+#endif
 
 /* Allow users to override quirks. */
 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
@@ -2741,8 +2744,10 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
 	AcpiLeaveSleepState(state);
     if (slp_state >= ACPI_SS_DEV_SUSPEND)
 	DEVICE_RESUME(root_bus);
-    if (slp_state >= ACPI_SS_SLEPT)
+    if (slp_state >= ACPI_SS_SLEPT) {
+	acpi_resync_clock(sc);
 	acpi_enable_fixed_events(sc);
+    }
     sc->acpi_next_sstate = 0;
 
     mtx_unlock(&Giant);
@@ -2765,10 +2770,10 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
     return_ACPI_STATUS (status);
 }
 
-void
+static void
 acpi_resync_clock(struct acpi_softc *sc)
 {
-
+#ifdef __amd64__
     if (!acpi_reset_clock)
 	return;
 
@@ -2778,6 +2783,7 @@ acpi_resync_clock(struct acpi_softc *sc)
     (void)timecounter->tc_get_timecount(timecounter);
     (void)timecounter->tc_get_timecount(timecounter);
     inittodr(time_second + sc->acpi_sleep_delay);
+#endif
 }
 
 /* Enable or disable the device's wake GPE. */

sys/dev/acpica/acpivar.h

@@ -339,7 +339,6 @@ ACPI_STATUS	acpi_SetIntrModel(int model);
 int		acpi_ReqSleepState(struct acpi_softc *sc, int state);
 int		acpi_AckSleepState(struct apm_clone_data *clone, int error);
 ACPI_STATUS	acpi_SetSleepState(struct acpi_softc *sc, int state);
-void		acpi_resync_clock(struct acpi_softc *sc);
 int		acpi_wake_set_enable(device_t dev, int enable);
 int		acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
 ACPI_STATUS	acpi_Startup(void);