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| author | Gabor Juhos <juhosg@openwrt.org> | 2010-01-31 12:48:48 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2010-01-31 12:48:48 +0000 |
| commit | 8aceaf96be93a92cadbb1058fe065d04805b6af8 (patch) | |
| tree | 4247d80133b7140f8c5d99cad94454a7a8bad093 | |
| parent | 21b06bd2c076c62d678efbf2288a2d4f12fe8aa6 (diff) | |
| download | mtk-20170518-8aceaf96be93a92cadbb1058fe065d04805b6af8.zip mtk-20170518-8aceaf96be93a92cadbb1058fe065d04805b6af8.tar.gz mtk-20170518-8aceaf96be93a92cadbb1058fe065d04805b6af8.tar.bz2 | |
ramips_eth: simplify tx_next computation
SVN-Revision: 19444
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ramips.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c index 3061bcc..ed748de 100644 --- a/target/linux/ramips/files/drivers/net/ramips.c +++ b/target/linux/ramips/files/drivers/net/ramips.c @@ -163,10 +163,7 @@ ramips_eth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) dma_sync_single_for_device(NULL, mapped_addr, skb->len, DMA_TO_DEVICE); spin_lock_irqsave(&priv->page_lock, flags); tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0); - if (tx == NUM_TX_DESC - 1) - tx_next = 0; - else - tx_next = tx + 1; + tx_next = (tx + 1) % NUM_TX_DESC; if ((priv->tx_skb[tx]) || (priv->tx_skb[tx_next]) || !(priv->tx[tx].txd2 & TX_DMA_DONE) || @@ -180,7 +177,7 @@ ramips_eth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) dev->stats.tx_bytes += skb->len; priv->tx_skb[tx] = skb; wmb(); - ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); + ramips_fe_wr(tx_next, RAMIPS_TX_CTX_IDX0); spin_unlock_irqrestore(&priv->page_lock, flags); return NETDEV_TX_OK; |