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r8169: remove now unneeded barrier in rtl_tx

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Until ae84bc1873 ("r8169: don't use bit LastFrag in tx descriptor
after send") we used to access another bit in the descriptor, therefore
it seems the barrier was needed. Since this commit DescOwn is the
only bit we're interested in, so the barrier isn't needed any longer.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2020-03-06 23:58:50 +01:00 committed by David S. Miller
parent 22d352c51e
commit 101438729d
1 changed files with 0 additions and 6 deletions
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6
drivers/net/ethernet/realtek/r8169_main.c
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@ -4397,12 +4397,6 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp,
if (status & DescOwn)
break;
/* This barrier is needed to keep us from reading
* any other fields out of the Tx descriptor until
* we know the status of DescOwn
*/
dma_rmb();
rtl8169_unmap_tx_skb(tp, entry);
if (skb) {