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| author | Alexander Kochetkov <al.kochet@gmail.com> | 2016-02-09 18:20:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-16 15:26:30 -0500 |
| commit | 99f93a156a2aa9ac1e44f7cb1a197425e6d9879a (patch) | |
| tree | 0203edb151bb461fc9f720007be517ab30b7a020 | |
| parent | c278c253f3d992c6994d08aa0efb2b6806ca396f (diff) | |
| download | op-kernel-dev-99f93a156a2aa9ac1e44f7cb1a197425e6d9879a.zip op-kernel-dev-99f93a156a2aa9ac1e44f7cb1a197425e6d9879a.tar.gz | |
net: arc_emac: reset txbd_curr and txbd_dirty pointers to zero
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>
| -rw-r--r-- | drivers/net/ethernet/arc/emac_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c index 63a63e3..4f6e5be 100644 --- a/drivers/net/ethernet/arc/emac_main.c +++ b/drivers/net/ethernet/arc/emac_main.c @@ -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); |
