From: Alexander Duyck Date: Thu, 19 Aug 2010 13:34:27 +0000 (+0000) Subject: ixgbe: combine two modifications of TXDCTL into one X-Git-Tag: v2.6.37-rc1~147^2~777 X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=179b4096e25c190fc987832e0037b40507cc7ca0;p=net-next-2.6.git ixgbe: combine two modifications of TXDCTL into one In ixgbe_up_complete we were doing a read-modify-write of TXDCTL followed by another one just a few lines further down. Instead of performing two separate read-modify-writes it would make more sense to combine the two into one. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index fffb1ce4f6e..5d90f699fa7 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -3411,6 +3411,12 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter) IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); } + if (hw->mac.type == ixgbe_mac_82599EB) { + /* DMATXCTL.EN must be set after all Tx queue config is done */ + dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); + dmatxctl |= IXGBE_DMATXCTL_TE; + IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); + } for (i = 0; i < adapter->num_tx_queues; i++) { j = adapter->tx_ring[i]->reg_idx; txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); @@ -3421,18 +3427,6 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter) /* enable WTHRESH=8 descriptors, to encourage burst writeback */ txdctl |= (8 << 16); } - IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); - } - - if (hw->mac.type == ixgbe_mac_82599EB) { - /* DMATXCTL.EN must be set after all Tx queue config is done */ - dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); - dmatxctl |= IXGBE_DMATXCTL_TE; - IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); - } - for (i = 0; i < adapter->num_tx_queues; i++) { - j = adapter->tx_ring[i]->reg_idx; - txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j)); txdctl |= IXGBE_TXDCTL_ENABLE; IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl); if (hw->mac.type == ixgbe_mac_82599EB) {