tipc: Remove support for TIPC mode change callback

Eliminates support for the callback routine invoked when TIPC
changes its mode of operation from inactive to standalone or from
standalone to networked. This callback was part of TIPC's obsolete
native API and is not used by TIPC internally.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 48 deletions

diff --git a/net/tipc/user_reg.c b/net/tipc/user_reg.c
index 506928803162..2e2702e2049c 100644
--- a/net/tipc/user_reg.c
+++ b/net/tipc/user_reg.c
@@ -50,15 +50,11 @@
 /**
  * struct tipc_user - registered TIPC user info
  * @next: index of next free registry entry (or -1 for an allocated entry)
- * @callback: ptr to routine to call when TIPC mode changes (NULL if none)
- * @usr_handle: user-defined value passed to callback routine
  * @ports: list of user ports owned by the user
  */
 
 struct tipc_user {
 	int next;
-	tipc_mode_event callback;
-	void *usr_handle;
 	struct list_head ports;
 };
 
@@ -95,41 +91,12 @@ static int reg_init(void)
 }
 
 /**
- * reg_callback - inform TIPC user about current operating mode
- */
-
-static void reg_callback(struct tipc_user *user_ptr)
-{
-	tipc_mode_event cb;
-	void *arg;
-
-	spin_lock_bh(&reg_lock);
-	cb = user_ptr->callback;
-	arg = user_ptr->usr_handle;
-	spin_unlock_bh(&reg_lock);
-
-	if (cb)
-		cb(arg, tipc_mode, tipc_own_addr);
-}
-
-/**
  * tipc_reg_start - activate TIPC user registry
  */
 
 int tipc_reg_start(void)
 {
-	u32 u;
-	int res;
-
-	if ((res = reg_init()))
-		return res;
-
-	for (u = 1; u <= MAX_USERID; u++) {
-		if (users[u].callback)
-			tipc_k_signal((Handler)reg_callback,
-				      (unsigned long)&users[u]);
-	}
-	return 0;
+	return reg_init();
 }
 
 /**
@@ -138,15 +105,9 @@ int tipc_reg_start(void)
 
 void tipc_reg_stop(void)
 {
-	int id;
-
 	if (!users)
 		return;
 
-	for (id = 1; id <= MAX_USERID; id++) {
-		if (users[id].callback)
-			reg_callback(&users[id]);
-	}
 	kfree(users);
 	users = NULL;
 }
@@ -157,12 +118,10 @@ void tipc_reg_stop(void)
  * NOTE: This routine may be called when TIPC is inactive.
  */
 
-int tipc_attach(u32 *userid, tipc_mode_event cb, void *usr_handle)
+int tipc_attach(u32 *userid)
 {
 	struct tipc_user *user_ptr;
 
-	if ((tipc_mode == TIPC_NOT_RUNNING) && !cb)
-		return -ENOPROTOOPT;
 	if (!users)
 		reg_init();
 
@@ -177,13 +136,9 @@ int tipc_attach(u32 *userid, tipc_mode_event cb, void *usr_handle)
 	user_ptr->next = -1;
 	spin_unlock_bh(&reg_lock);
 
-	user_ptr->callback = cb;
-	user_ptr->usr_handle = usr_handle;
 	INIT_LIST_HEAD(&user_ptr->ports);
 	atomic_inc(&tipc_user_count);
 
-	if (cb && (tipc_mode != TIPC_NOT_RUNNING))
-		tipc_k_signal((Handler)reg_callback, (unsigned long)user_ptr);
 	return 0;
 }
 
@@ -207,7 +162,6 @@ void tipc_detach(u32 userid)
 	}
 
 	user_ptr = &users[userid];
-	user_ptr->callback = NULL;
 	INIT_LIST_HEAD(&ports_temp);
 	list_splice(&user_ptr->ports, &ports_temp);
 	user_ptr->next = next_free_user;