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s390/qeth: don't bother updating the last-tx time 

As the documentation for netif_trans_update() says, netdev_start_xmit()
already updates the last-tx time after every good xmit. So don't
duplicate that effort.

One odd case is that qeth_flush_buffers() also gets called from our
TX completion handler, to flush out any partially filled buffer when
we switch the queue to non-packing mode. But as the TX completion
handler will _always_ wake the txq, we don't have to worry about
the TX watchdog there.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2019-04-17 18:17:30 +02:00 committed by David S. Miller
parent a4cdc9baee
commit fdd1a5303e
1 changed files with 0 additions and 1 deletions
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1
drivers/s390/net/qeth_core_main.c
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@ -3371,7 +3371,6 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
}
QETH_TXQ_STAT_ADD(queue, bufs, count);
netif_trans_update(queue->card->dev);
qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
if (atomic_read(&queue->set_pci_flags_count))
qdio_flags |= QDIO_FLAG_PCI_OUT;