--- tws.h	(revision 256870)
+++ tws.h	(working copy)
@@ -248,7 +248,6 @@ 
     struct mtx io_lock;                   /* IO  lock */
     struct tws_ioctl_lock ioctl_lock;     /* ioctl lock */ 
     u_int32_t seq_id;                     /* Sequence id */
-    void *chan;                           /* IOCTL req wait channel */
     struct tws_circular_q aen_q;          /* aen q */
     struct tws_circular_q trace_q;        /* trace q */
     struct tws_stats stats;               /* I/O stats */
--- tws_cam.c	(revision 256870)
+++ tws_cam.c	(working copy)
@@ -1297,7 +1297,7 @@ 
 
     tws_turn_on_interrupts(sc);
 
-    wakeup_one(sc->chan);
+    wakeup_one(sc);
 }
 
 
--- tws_user.c	(revision 256870)
+++ tws_user.c	(working copy)
@@ -103,8 +103,7 @@ 
     do {
         req = tws_get_request(sc, TWS_REQ_TYPE_PASSTHRU);
         if ( !req ) {
-            sc->chan = (void *)sc;
-            error = tsleep(sc->chan,  0, "tws_sleep", TWS_IOCTL_TIMEOUT*hz);
+            error = tsleep(sc,  0, "tws_sleep", TWS_IOCTL_TIMEOUT*hz);
             if ( error == EWOULDBLOCK ) {
                 return(ETIMEDOUT);
             }
@@ -203,7 +202,7 @@ 
     //
     req->state = TWS_REQ_STATE_FREE;
 
-    wakeup_one(sc->chan);
+    wakeup_one(sc);
 
     return(error);
 }