mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-01 06:33:07 +00:00
Code Issues Releases Wiki Activity

net: arc_emac: reset txbd_curr and txbd_dirty pointers to zero

Browse source 
EMAC reset internal tx ring pointer to zero at statup.
txbd_curr and txbd_dirty can be different from zero.
That cause ethernet transfer hang (no packets transmitted).

In order to reproduce, run on device:
    ifconfig eth0 down
    ifconfig eth0 up

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Kochetkov 2016-02-09 18:20:39 +03:00 committed by David S. Miller
parent c278c253f3
commit 99f93a156a
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/net/ethernet/arc/emac_main.c
View file

@ -447,6 +447,9 @@ static int arc_emac_open(struct net_device *ndev)
*last_rx_bd = (*last_rx_bd + 1) % RX_BD_NUM;
}
priv->txbd_curr = 0;
priv->txbd_dirty = 0;
/* Clean Tx BD's */
memset(priv->txbd, 0, TX_RING_SZ);