thunderbolt: Drop tb_tunnel_restart()

It is pretty much the same as tb_tunnel_activate() excepts does check
for already activated paths. This is not needed anymore and makes it
more streamlined so drop tb_tunnel_restart() in favour of
tb_tunnel_activate().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/thunderbolt/tb.c

@@ -3037,7 +3037,7 @@ static int tb_resume_noirq(struct tb *tb)
 			/* Only need to do it once */
 			usb3_delay = 0;
 		}
-		tb_tunnel_restart(tunnel);
+		tb_tunnel_activate(tunnel);
 	}
 	if (!list_empty(&tcm->tunnel_list)) {
 		/*
@@ -3147,7 +3147,7 @@ static int tb_runtime_resume(struct tb *tb)
 	tb_free_invalid_tunnels(tb);
 	tb_restore_children(tb->root_switch);
 	list_for_each_entry_safe(tunnel, n, &tcm->tunnel_list, list)
-		tb_tunnel_restart(tunnel);
+		tb_tunnel_activate(tunnel);
 	tb_switch_enter_redrive(tb->root_switch);
 	tcm->hotplug_active = true;
 	mutex_unlock(&tb->lock);

drivers/thunderbolt/tunnel.c

@@ -2170,12 +2170,12 @@ bool tb_tunnel_is_invalid(struct tb_tunnel *tunnel)
 }
 
 /**
- * tb_tunnel_restart() - activate a tunnel after a hardware reset
- * @tunnel: Tunnel to restart
+ * tb_tunnel_activate() - activate a tunnel
+ * @tunnel: Tunnel to activate
  *
  * Return: 0 on success and negative errno in case if failure
  */
-int tb_tunnel_restart(struct tb_tunnel *tunnel)
+int tb_tunnel_activate(struct tb_tunnel *tunnel)
 {
 	int res, i;
 
@@ -2218,27 +2218,6 @@ int tb_tunnel_restart(struct tb_tunnel *tunnel)
 	return res;
 }
 
-/**
- * tb_tunnel_activate() - activate a tunnel
- * @tunnel: Tunnel to activate
- *
- * Return: Returns 0 on success or an error code on failure.
- */
-int tb_tunnel_activate(struct tb_tunnel *tunnel)
-{
-	int i;
-
-	for (i = 0; i < tunnel->npaths; i++) {
-		if (tunnel->paths[i]->activated) {
-			tb_tunnel_WARN(tunnel,
-				       "trying to activate an already activated tunnel\n");
-			return -EINVAL;
-		}
-	}
-
-	return tb_tunnel_restart(tunnel);
-}
-
 /**
  * tb_tunnel_deactivate() - deactivate a tunnel
  * @tunnel: Tunnel to deactivate

drivers/thunderbolt/tunnel.h

@@ -106,7 +106,6 @@ struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
 
 void tb_tunnel_free(struct tb_tunnel *tunnel);
 int tb_tunnel_activate(struct tb_tunnel *tunnel);
-int tb_tunnel_restart(struct tb_tunnel *tunnel);
 void tb_tunnel_deactivate(struct tb_tunnel *tunnel);
 bool tb_tunnel_is_invalid(struct tb_tunnel *tunnel);
 bool tb_tunnel_port_on_path(const struct tb_tunnel *tunnel,