Looks like commit 
a6e4bc530403 didn't include updates to drivers so the
Blackfin CAN driver fails to build now.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 
 
 #define DRV_NAME "bfin_can"
 #define BFIN_CAN_TIMEOUT 100
+#define TX_ECHO_SKB_MAX  1
 
 /*
  * transmit and receive channels
        struct net_device *dev;
        struct bfin_can_priv *priv;
 
-       dev = alloc_candev(sizeof(*priv));
+       dev = alloc_candev(sizeof(*priv), TX_ECHO_SKB_MAX);
        if (!dev)
                return NULL;