diff options
Diffstat (limited to 'drivers/net/ethernet/arc')
| -rw-r--r-- | drivers/net/ethernet/arc/emac_main.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c index abe1eabc0171..63a63e31d59d 100644 --- a/drivers/net/ethernet/arc/emac_main.c +++ b/drivers/net/ethernet/arc/emac_main.c @@ -163,7 +163,7 @@ static void arc_emac_tx_clean(struct net_device *ndev) struct sk_buff *skb = tx_buff->skb; unsigned int info = le32_to_cpu(txbd->info); - if ((info & FOR_EMAC) || !txbd->data) + if ((info & FOR_EMAC) || !txbd->data || !skb) break; if (unlikely(info & (DROP | DEFR | LTCL | UFLO))) { @@ -191,6 +191,7 @@ static void arc_emac_tx_clean(struct net_device *ndev) txbd->data = 0; txbd->info = 0; + tx_buff->skb = NULL; *txbd_dirty = (*txbd_dirty + 1) % TX_BD_NUM; } @@ -610,7 +611,6 @@ static int arc_emac_tx(struct sk_buff *skb, struct net_device *ndev) dma_unmap_addr_set(&priv->tx_buff[*txbd_curr], addr, addr); dma_unmap_len_set(&priv->tx_buff[*txbd_curr], len, len); - priv->tx_buff[*txbd_curr].skb = skb; priv->txbd[*txbd_curr].data = cpu_to_le32(addr); /* Make sure pointer to data buffer is set */ @@ -620,6 +620,11 @@ static int arc_emac_tx(struct sk_buff *skb, struct net_device *ndev) *info = cpu_to_le32(FOR_EMAC | FIRST_OR_LAST_MASK | len); + /* Make sure info word is set */ + wmb(); + + priv->tx_buff[*txbd_curr].skb = skb; + /* Increment index to point to the next BD */ *txbd_curr = (*txbd_curr + 1) % TX_BD_NUM; |