[netdrvr] b44: handle excessive multicast groups

If there are more than B44_MCAST_TABLE_SIZE groups in the dev->mc_list,
it will only listen to the first B44_MCAST_TABLE_SIZE that it sees.

This change makes the driver go into RXCONFIG_ALLMULTI mode if there
are more than B44_MCAST_TABLE_SIZE groups being subscribed to, similar
to other network drivers.

Noticed by Bill Helfinstine <bhelf@flitterfly.whirpon.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/b44.c

@@ -1706,14 +1706,15 @@ static void __b44_set_rx_mode(struct net_device *dev)
 
 		__b44_set_mac_addr(bp);
 
-		if (dev->flags & IFF_ALLMULTI)
+		if ((dev->flags & IFF_ALLMULTI) ||
+		    (dev->mc_count > B44_MCAST_TABLE_SIZE))
 			val |= RXCONFIG_ALLMULTI;
 		else
 			i = __b44_load_mcast(bp, dev);
 
-		for (; i < 64; i++) {
+		for (; i < 64; i++)
 			__b44_cam_write(bp, zero, i);
-		}
+
 		bw32(bp, B44_RXCONFIG, val);
         	val = br32(bp, B44_CAM_CTRL);
 	        bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);