diff --git a/sys/dev/asmc/asmc.c b/sys/dev/asmc/asmc.c
--- a/sys/dev/asmc/asmc.c
+++ b/sys/dev/asmc/asmc.c
@@ -621,49 +621,49 @@
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "id",
-		    CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_id, "I",
 		    "Fan ID");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "speed",
-		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_speed, "I",
 		    "Fan speed in RPM");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "safespeed",
-		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_safespeed, "I",
 		    "Fan safe speed in RPM");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "minspeed",
-		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_minspeed, "I",
 		    "Fan minimum speed in RPM");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "maxspeed",
-		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_maxspeed, "I",
 		    "Fan maximum speed in RPM");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "targetspeed",
-		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
 		    dev, j, model->smc_fan_targetspeed, "I",
 		    "Fan target speed in RPM");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_fan_tree[i]),
 		    OID_AUTO, "manual",
-		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
 		    dev, j, asmc_mb_sysctl_fanmanual, "I",
 		    "Fan manual mode (0=auto, 1=manual)");
 	}
@@ -679,7 +679,7 @@
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_temp_tree),
 		    OID_AUTO, model->smc_tempnames[i],
-		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, i, asmc_temp_sysctl, "I",
 		    model->smc_tempdescs[i]);
 	}
@@ -696,14 +696,14 @@
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_light_tree),
 		    OID_AUTO, "left",
-		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, 0, model->smc_light_left, "I",
 		    "Keyboard backlight left sensor");
 
 		SYSCTL_ADD_PROC(sysctlctx,
 		    SYSCTL_CHILDREN(sc->sc_light_tree),
 		    OID_AUTO, "right",
-		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+		    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 		    dev, 0, model->smc_light_right, "I",
 		    "Keyboard backlight right sensor");
 
@@ -711,7 +711,7 @@
 		    SYSCTL_CHILDREN(sc->sc_light_tree),
 		    OID_AUTO, "control",
 		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY |
-		    CTLFLAG_NEEDGIANT, dev, 0,
+		    CTLFLAG_MPSAFE, dev, 0,
 		    model->smc_light_control, "I",
 		    "Keyboard backlight brightness control");
 	}
@@ -729,21 +729,21 @@
 	SYSCTL_ADD_PROC(sysctlctx,
 	    SYSCTL_CHILDREN(sc->sc_sms_tree),
 	    OID_AUTO, "x",
-	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 	    dev, 0, model->smc_sms_x, "I",
 	    "Sudden Motion Sensor X value");
 
 	SYSCTL_ADD_PROC(sysctlctx,
 	    SYSCTL_CHILDREN(sc->sc_sms_tree),
 	    OID_AUTO, "y",
-	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 	    dev, 0, model->smc_sms_y, "I",
 	    "Sudden Motion Sensor Y value");
 
 	SYSCTL_ADD_PROC(sysctlctx,
 	    SYSCTL_CHILDREN(sc->sc_sms_tree),
 	    OID_AUTO, "z",
-	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
+	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
 	    dev, 0, model->smc_sms_z, "I",
 	    "Sudden Motion Sensor Z value");