[ATM]: attempt to autoload atm drivers

From: Mitchell Blank Jr <mitch@sfgoth.com>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/common.c b/net/atm/common.c
index 83454e1..db9318f 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -424,7 +424,7 @@
 	    vcc->qos.rxtp.traffic_class == ATM_ANYCLASS)
 		return -EINVAL;
 	if (likely(itf != ATM_ITF_ANY)) {
-		dev = atm_dev_lookup(itf);
+		dev = try_then_request_module(atm_dev_lookup(itf), "atm-device-%d", itf);
 	} else {
 		dev = NULL;
 		spin_lock(&atm_dev_lock);