diff options
| -rw-r--r-- | drivers/net/ethernet/realtek/r8169_main.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 641c94a469c1..8910e900ec45 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4362,11 +4362,11 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev) static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp, int budget) { - unsigned int dirty_tx, tx_left, bytes_compl = 0, pkts_compl = 0; + unsigned int dirty_tx, bytes_compl = 0, pkts_compl = 0; dirty_tx = tp->dirty_tx; - for (tx_left = READ_ONCE(tp->cur_tx) - dirty_tx; tx_left; tx_left--) { + while (READ_ONCE(tp->cur_tx) != dirty_tx) { unsigned int entry = dirty_tx % NUM_TX_DESC; struct sk_buff *skb = tp->tx_skb[entry].skb; u32 status; @@ -4389,7 +4389,6 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp, netdev_completed_queue(dev, pkts_compl, bytes_compl); dev_sw_netstats_tx_add(dev, pkts_compl, bytes_compl); - tp->dirty_tx = dirty_tx; /* Sync with rtl8169_start_xmit: * - publish dirty_tx ring index (write barrier) * - refresh cur_tx ring index and queue status (read barrier) @@ -4397,7 +4396,7 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp, * a racing xmit thread can only have a right view of the * ring status. */ - smp_mb(); + smp_store_mb(tp->dirty_tx, dirty_tx); if (netif_queue_stopped(dev) && rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) { netif_wake_queue(dev); |