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gianfar: Remove redundant ops for do_tstamp from xmit()

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Timestamp BD status updates that can be merged into the
same "do_tstamp" block, no need for extra save/restore
to the BD area.  The code is more readable too.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Claudiu Manoil 2016-02-23 11:48:39 +02:00 committed by David S. Miller
parent 42f397adfc
commit 48963b4492
1 changed files with 5 additions and 9 deletions
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14
drivers/net/ethernet/freescale/gianfar.c
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@ -2436,15 +2436,8 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
txbdp_tstamp = txbdp = next_txbd(txbdp, base,
tx_queue->tx_ring_size);
if (nr_frags == 0) {
if (unlikely(do_tstamp)) {
u32 lstatus_ts = be32_to_cpu(txbdp_tstamp->lstatus);
lstatus_ts |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
txbdp_tstamp->lstatus = cpu_to_be32(lstatus_ts);
} else {
lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
}
if (likely(!nr_frags)) {
lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
} else {
u32 lstatus_start = lstatus;
@ -2488,8 +2481,11 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
bufaddr = be32_to_cpu(txbdp_start->bufPtr);
bufaddr += fcb_len;
lstatus_ts |= BD_LFLAG(TXBD_READY) |
(skb_headlen(skb) - fcb_len);
if (!nr_frags)
lstatus_ts |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
txbdp_tstamp->bufPtr = cpu_to_be32(bufaddr);
txbdp_tstamp->lstatus = cpu_to_be32(lstatus_ts);