--- src/sys/bus/smbus/smbconf.c	2003/08/07 21:16:47	1.4
+++ src/sys/bus/smbus/smbconf.c	2005/06/02 20:40:38	1.5
@@ -33,6 +33,7 @@
 #include <sys/malloc.h>
 #include <sys/module.h>
 #include <sys/bus.h>
+#include <sys/thread2.h>
 
 #include "smbconf.h"
 #include "smbus.h"
@@ -130,7 +131,7 @@ int
 smbus_request_bus(device_t bus, device_t dev, int how)
 {
 	struct smbus_softc *sc = (struct smbus_softc *)device_get_softc(bus);
-	int s, error = 0;
+	int error = 0;
 
 	/* first, ask the underlying layers if the request is ok */
 	do {
@@ -141,15 +142,13 @@ smbus_request_bus(device_t bus, device_t
 	} while (error == EWOULDBLOCK);
 
 	while (!error) {
-		s = splhigh();	
+		crit_enter();
 		if (sc->owner && sc->owner != dev) {
-			splx(s);
-
+			crit_exit();
 			error = smbus_poll(sc, how);
 		} else {
 			sc->owner = dev;
-
-			splx(s);
+			crit_exit();
 			return (0);
 		}
 
@@ -171,7 +170,7 @@ int
 smbus_release_bus(device_t bus, device_t dev)
 {
 	struct smbus_softc *sc = (struct smbus_softc *)device_get_softc(bus);
-	int s, error;
+	int error;
 
 	/* first, ask the underlying layers if the release is ok */
 	error = SMBUS_CALLBACK(device_get_parent(bus), SMB_RELEASE_BUS, NULL);
@@ -179,14 +178,13 @@ smbus_release_bus(device_t bus, device_t
 	if (error)
 		return (error);
 
-	s = splhigh();
+	crit_enter();
 	if (sc->owner != dev) {
-		splx(s);
+		crit_exit();
 		return (EACCES);
 	}
-
 	sc->owner = 0;
-	splx(s);
+	crit_exit();
 
 	/* wakeup waiting processes */
 	wakeup(sc);