diff options
Diffstat (limited to 'drivers/net/mv643xx_eth.c')
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 49 |
1 files changed, 19 insertions, 30 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index a6152db82e9..fe53fa0e3ae 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -353,27 +353,19 @@ static int mv643xx_eth_free_tx_queue(struct net_device *dev, stats->tx_errors++; } - /* - * If return_info is different than 0, release the skb. - * The case where return_info is not 0 is only in case - * when transmitted a scatter/gather packet, where only - * last skb releases the whole chain. - */ - if (pkt_info.return_info) { - if (skb_shinfo(pkt_info.return_info)->nr_frags) - dma_unmap_page(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, - DMA_TO_DEVICE); - else - dma_unmap_single(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, - DMA_TO_DEVICE); + if (pkt_info.cmd_sts & ETH_TX_FIRST_DESC) + dma_unmap_single(NULL, pkt_info.buf_ptr, + pkt_info.byte_cnt, + DMA_TO_DEVICE); + else + dma_unmap_page(NULL, pkt_info.buf_ptr, + pkt_info.byte_cnt, + DMA_TO_DEVICE); + if (pkt_info.return_info) { dev_kfree_skb_irq(pkt_info.return_info); released = 0; - } else - dma_unmap_page(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, DMA_TO_DEVICE); + } } spin_unlock(&mp->lock); @@ -1024,20 +1016,17 @@ static void mv643xx_tx(struct net_device *dev) struct pkt_info pkt_info; while (eth_tx_return_desc(mp, &pkt_info) == ETH_OK) { - if (pkt_info.return_info) { - if (skb_shinfo(pkt_info.return_info)->nr_frags) - dma_unmap_page(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, - DMA_TO_DEVICE); - else - dma_unmap_single(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, - DMA_TO_DEVICE); + if (pkt_info.cmd_sts & ETH_TX_FIRST_DESC) + dma_unmap_single(NULL, pkt_info.buf_ptr, + pkt_info.byte_cnt, + DMA_TO_DEVICE); + else + dma_unmap_page(NULL, pkt_info.buf_ptr, + pkt_info.byte_cnt, + DMA_TO_DEVICE); + if (pkt_info.return_info) dev_kfree_skb_irq(pkt_info.return_info); - } else - dma_unmap_page(NULL, pkt_info.buf_ptr, - pkt_info.byte_cnt, DMA_TO_DEVICE); } if (netif_queue_stopped(dev) && |