[ATM]: net/atm/ioctl.c: autoload pppoatm and br2684

Signed-off-by: Roman Kagan <rkagan@mail.ru>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>

net/atm/ioctl.c

@@ -105,16 +105,34 @@ int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 			if (!error)
 				sock->state = SS_CONNECTED;
 			goto done;
-		default:
+		case ATM_SETBACKEND:
+		case ATM_NEWBACKENDIF:
+			{
+				atm_backend_t backend;
+				error = get_user(backend, (atm_backend_t __user *) argp);
+				if (error)
+					goto done;
+				switch (backend) {
+					case ATM_BACKEND_PPP:
+						request_module("pppoatm");
+						break;
+					case ATM_BACKEND_BR2684:
+						request_module("br2684");
 						break;
 				}
-
-	if (cmd == ATMMPC_CTRL || cmd == ATMMPC_DATA)
+			}
+			break;
+		case ATMMPC_CTRL:
+		case ATMMPC_DATA:
 			request_module("mpoa");
-	if (cmd == ATMARPD_CTRL)
+			break;
+		case ATMARPD_CTRL:
 			request_module("clip");
-	if (cmd == ATMLEC_CTRL)
+			break;
+		case ATMLEC_CTRL:
 			request_module("lec");
+			break;
+	}
 
 	error = -ENOIOCTLCMD;