[PATCH net-next] r8169: remove unneeded mmiowb barriers

[Heiner Kallweit]

writex() has implicit barriers, that's what makes it different from
writex_relaxed(). Therefore these calls to mmiowb() can be removed.

Signed-off-by: Heiner Kallweit <hkallwe...@gmail.com>
---
 drivers/net/ethernet/realtek/r8169.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c 
b/drivers/net/ethernet/realtek/r8169.c
index 4114c2712..bb1847fd6 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1283,13 +1283,11 @@ static u16 rtl_get_events(struct rtl8169_private *tp)
 static void rtl_ack_events(struct rtl8169_private *tp, u16 bits)
 {
        RTL_W16(tp, IntrStatus, bits);
-       mmiowb();
 }
 
 static void rtl_irq_disable(struct rtl8169_private *tp)
 {
        RTL_W16(tp, IntrMask, 0);
-       mmiowb();
 }
 
 #define RTL_EVENT_NAPI_RX      (RxOK | RxErr)
@@ -6127,10 +6125,8 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff 
*skb,
        if (unlikely(stop_queue))
                netif_stop_queue(dev);
 
-       if (__netdev_sent_queue(dev, skb->len, skb->xmit_more)) {
+       if (__netdev_sent_queue(dev, skb->len, skb->xmit_more))
                RTL_W8(tp, TxPoll, NPQ);
-               mmiowb();
-       }
 
        if (unlikely(stop_queue)) {
                /* Sync with rtl_tx:
@@ -6481,9 +6477,7 @@ static int rtl8169_poll(struct napi_struct *napi, int 
budget)
 
        if (work_done < budget) {
                napi_complete_done(napi, work_done);
-
                rtl_irq_enable(tp);
-               mmiowb();
        }
 
        return work_done;
-- 
2.19.2