--- sys/dev/isl/isl.c	(revision 350672)
+++ sys/dev/isl/isl.c	(working copy)
@@ -78,25 +78,13 @@ 
 static int
 isl_read_byte(device_t dev, uint8_t reg, uint8_t *val)
 {
-	uint16_t addr = iicbus_get_addr(dev);
-	struct iic_msg msgs[] = {
-	     { addr, IIC_M_WR | IIC_M_NOSTOP, 1, &reg },
-	     { addr, IIC_M_RD, 1, val },
-	};
-
-	return (iicbus_transfer(dev, msgs, nitems(msgs)));
+	return (iicdev_readfrom(dev, reg, val, 1, IIC_INTRWAIT));
 }
 
 static int
 isl_write_byte(device_t dev, uint8_t reg, uint8_t val)
 {
-	uint16_t addr = iicbus_get_addr(dev);
-	uint8_t bytes[] = { reg, val };
-	struct iic_msg msgs[] = {
-	     { addr, IIC_M_WR, nitems(bytes), bytes },
-	};
-
-	return (iicbus_transfer(dev, msgs, nitems(msgs)));
+	return (iicdev_writeto(dev, reg, &val, 1, IIC_INTRWAIT));
 }
 
 /*