diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index cf6445d..f7b42b9 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -104,8 +104,8 @@ static inline void dmadesc_set_addr(struct bcmgenet_priv *priv, static inline void dmadesc_set(struct bcmgenet_priv *priv, void __iomem *d, dma_addr_t addr, u32 val) { - dmadesc_set_length_status(priv, d, val); dmadesc_set_addr(priv, d, addr); + dmadesc_set_length_status(priv, d, val); } static inline dma_addr_t dmadesc_get_addr(struct bcmgenet_priv *priv, @@ -1331,6 +1331,7 @@ static int bcmgenet_xmit_frag(struct net_device *dev, struct bcmgenet_priv *priv = netdev_priv(dev); struct device *kdev = &priv->pdev->dev; struct enet_cb *tx_cb_ptr; + unsigned int frag_size; dma_addr_t mapping; int ret; @@ -1338,10 +1339,12 @@ static int bcmgenet_xmit_frag(struct net_device *dev, if (unlikely(!tx_cb_ptr)) BUG(); + tx_cb_ptr->skb = NULL; - mapping = skb_frag_dma_map(kdev, frag, 0, - skb_frag_size(frag), DMA_TO_DEVICE); + frag_size = skb_frag_size(frag); + + mapping = skb_frag_dma_map(kdev, frag, 0, frag_size, DMA_TO_DEVICE); ret = dma_mapping_error(kdev, mapping); if (ret) { priv->mib.tx_dma_failed++; @@ -1351,10 +1354,10 @@ static int bcmgenet_xmit_frag(struct net_device *dev, } dma_unmap_addr_set(tx_cb_ptr, dma_addr, mapping); - dma_unmap_len_set(tx_cb_ptr, dma_len, frag->size); + dma_unmap_len_set(tx_cb_ptr, dma_len, frag_size); dmadesc_set(priv, tx_cb_ptr->bd_addr, mapping, - (frag->size << DMA_BUFLENGTH_SHIFT) | dma_desc_flags | + (frag_size << DMA_BUFLENGTH_SHIFT) | dma_desc_flags | (priv->hw_params->qtag_mask << DMA_TX_QTAG_SHIFT)); return 0; @@ -1447,15 +1450,19 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev) else index -= 1; - nr_frags = skb_shinfo(skb)->nr_frags; ring = &priv->tx_rings[index]; txq = netdev_get_tx_queue(dev, ring->queue); + nr_frags = skb_shinfo(skb)->nr_frags; + spin_lock_irqsave(&ring->lock, flags); - if (ring->free_bds <= nr_frags + 1) { - netif_tx_stop_queue(txq); - netdev_err(dev, "%s: tx ring %d full when queue %d awake\n", - __func__, index, ring->queue); + if (ring->free_bds <= (nr_frags + 1)) { + if (!netif_tx_queue_stopped(txq)) { + netif_tx_stop_queue(txq); + netdev_err(dev, + "%s: tx ring %d full when queue %d awake\n", + __func__, index, ring->queue); + } ret = NETDEV_TX_BUSY; goto out; } |