gianfar: Remove redundant ops for do_tstamp from xmit()

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>

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 7b16ce637a8e68f00872175b2b53eaa33a9ca961..1e1157fa77f41cc7a1afe6a59eebf1731d13f59c 100644 (file)
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -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);