[PATCH net v2] drivers/net/wan/lapbether: Added needed_tailroom

[Xie He]

The underlying Ethernet device may request necessary tailroom to be
allocated by setting needed_tailroom. This driver should also set
needed_tailroom to request the tailroom needed by the underlying
Ethernet device to be allocated.

Cc: Willem de Bruijn <willemdebruijn.kernel@xxxxxxxxx>
Cc: Martin Schiller <ms@xxxxxxxxxx>
Signed-off-by: Xie He <xie.he.0141@xxxxxxxxx>
---
Change from v1:
None
I'm re-sending this patch unchanged because the previous reviewer has
stopped responding for 11 days and he didn't indicate what change I
should do to this patch.

It's hard to find reviewers for this code. I tried to send emails, but
people don't respond. If you can review it, I'd really appreciate it.
I'm not in a hurry so please take your time. Thanks!
---
 drivers/net/wan/lapbether.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c
index 1ea15f2123ed..cc297ea9c6ec 100644
--- a/drivers/net/wan/lapbether.c
+++ b/drivers/net/wan/lapbether.c
@@ -340,6 +340,7 @@ static int lapbeth_new_device(struct net_device *dev)
 	 */
 	ndev->needed_headroom = -1 + 3 + 2 + dev->hard_header_len
 					   + dev->needed_headroom;
+	ndev->needed_tailroom = dev->needed_tailroom;
 
 	lapbeth = netdev_priv(ndev);
 	lapbeth->axdev = ndev;
-- 
2.25.1