diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c
index 7def6ad..62cda25 100644
--- a/drivers/char/ds1620.c
+++ b/drivers/char/ds1620.c
@@ -163,8 +163,7 @@
 	netwinder_ds1620_reset();
 	netwinder_unlock(&flags);
 
-	set_current_state(TASK_INTERRUPTIBLE);
-	schedule_timeout(2);
+	msleep(20);
 }
 
 static unsigned int ds1620_in(int cmd, int bits)