r8169: more broken register writes workaround

commit 908ba2bfd22253f26fa910cd855e4ccffb1467d0 upstream.

78f1cd02457252e1ffbc6caa44a17424a45286b8 ("fix broken register writes")
does not work for Al Viro's r8169 (XID 18000000).

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index eca3a790b0fe..787befc65322 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2832,8 +2832,13 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
         spin_lock_irq(&tp->lock);
 
         RTL_W8(Cfg9346, Cfg9346_Unlock);
+
         RTL_W32(MAC4, high);
+        RTL_R32(MAC4);
+
         RTL_W32(MAC0, low);
+        RTL_R32(MAC0);
+
         RTL_W8(Cfg9346, Cfg9346_Lock);
 
         spin_unlock_irq(&tp->lock);