1 files changed, 3 insertions, 15 deletions

diff --git a/src/core/channel/child_channel.c b/src/core/channel/child_channel.c
index 2cb03829c7..244417384a 100644
--- a/src/core/channel/child_channel.c
+++ b/src/core/channel/child_channel.c
@@ -61,22 +61,11 @@ typedef struct {
 } lb_channel_data;
 
 typedef struct {
-  grpc_call_element *back;
   grpc_child_channel *channel;
 } lb_call_data;
 
-static void lb_call_op(grpc_call_element *elem, grpc_call_element *from_elem,
-                       grpc_call_op *op) {
-  lb_call_data *calld = elem->call_data;
-
-  switch (op->dir) {
-    case GRPC_CALL_UP:
-      calld->back->filter->call_op(calld->back, elem, op);
-      break;
-    case GRPC_CALL_DOWN:
-      grpc_call_next_op(elem, op);
-      break;
-  }
+static void lb_start_transport_op(grpc_call_element *elem, grpc_transport_op *op) {
+  grpc_call_next_op(elem, op);
 }
 
 /* Currently we assume all channel operations should just be pushed up. */
@@ -165,7 +154,7 @@ static void lb_destroy_channel_elem(grpc_channel_element *elem) {
 }
 
 const grpc_channel_filter grpc_child_channel_top_filter = {
-    lb_call_op,           lb_channel_op,           sizeof(lb_call_data),
+    lb_start_transport_op,           lb_channel_op,           sizeof(lb_call_data),
     lb_init_call_elem,    lb_destroy_call_elem,    sizeof(lb_channel_data),
     lb_init_channel_elem, lb_destroy_channel_elem, "child-channel", };
 
@@ -282,7 +271,6 @@ grpc_child_call *grpc_child_channel_create_call(grpc_child_channel *channel,
   lbelem = LINK_BACK_ELEM_FROM_CALL(stk);
   lbchand = lbelem->channel_data;
   lbcalld = lbelem->call_data;
-  lbcalld->back = parent;
   lbcalld->channel = channel;
 
   gpr_mu_lock(&lbchand->mu);