sungem, sunhme, sunvnet: Update drivers to use dma_wmb/rmb

This patch goes through and replaces wmb/rmb with dma_wmb/dma_rmb in cases
where the barrier is being used to order writes or reads to just memory and
doesn't involve any programmed I/O.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 401abf7254d3..53fe200e0b79 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -519,7 +519,7 @@ static int vnet_walk_rx_one(struct vnet_port *port,
         if (desc->hdr.state != VIO_DESC_READY)
                 return 1;
 
-        rmb();
+        dma_rmb();
 
         viodbg(DATA, "vio_walk_rx_one desc[%02x:%02x:%08x:%08x:%llx:%llx]\n",
                desc->hdr.state, desc->hdr.ack,
@@ -1380,7 +1380,7 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
         /* This has to be a non-SMP write barrier because we are writing
          * to memory which is shared with the peer LDOM.
          */
-        wmb();
+        dma_wmb();
 
         d->hdr.state = VIO_DESC_READY;
 
@@ -1395,7 +1395,7 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
          * is marked READY, but start_cons was false.
          * If so, vnet_ack() should send out the missed "start" trigger.
          *
-         * Note that the wmb() above makes sure the cookies et al. are
+         * Note that the dma_wmb() above makes sure the cookies et al. are
          * not globally visible before the VIO_DESC_READY, and that the
          * stores are ordered correctly by the compiler. The consumer will
          * not proceed until the VIO_DESC_READY is visible assuring that