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>
diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c
index 74e9b14..e23a642 100644
--- a/drivers/net/ethernet/sun/sungem.c
+++ b/drivers/net/ethernet/sun/sungem.c
@@ -718,7 +718,7 @@
cluster_start = curr = (gp->rx_new & ~(4 - 1));
count = 0;
kick = -1;
- wmb();
+ dma_wmb();
while (curr != limit) {
curr = NEXT_RX(curr);
if (++count == 4) {
@@ -1038,7 +1038,7 @@
if (gem_intme(entry))
ctrl |= TXDCTRL_INTME;
txd->buffer = cpu_to_le64(mapping);
- wmb();
+ dma_wmb();
txd->control_word = cpu_to_le64(ctrl);
entry = NEXT_TX(entry);
} else {
@@ -1076,7 +1076,7 @@
txd = &gp->init_block->txd[entry];
txd->buffer = cpu_to_le64(mapping);
- wmb();
+ dma_wmb();
txd->control_word = cpu_to_le64(this_ctrl | len);
if (gem_intme(entry))
@@ -1086,7 +1086,7 @@
}
txd = &gp->init_block->txd[first_entry];
txd->buffer = cpu_to_le64(first_mapping);
- wmb();
+ dma_wmb();
txd->control_word =
cpu_to_le64(ctrl | TXDCTRL_SOF | intme | first_len);
}
@@ -1585,7 +1585,7 @@
gp->rx_skbs[i] = NULL;
}
rxd->status_word = 0;
- wmb();
+ dma_wmb();
rxd->buffer = 0;
}
@@ -1647,7 +1647,7 @@
RX_BUF_ALLOC_SIZE(gp),
PCI_DMA_FROMDEVICE);
rxd->buffer = cpu_to_le64(dma_addr);
- wmb();
+ dma_wmb();
rxd->status_word = cpu_to_le64(RXDCTRL_FRESH(gp));
skb_reserve(skb, RX_OFFSET);
}
@@ -1656,7 +1656,7 @@
struct gem_txd *txd = &gb->txd[i];
txd->control_word = 0;
- wmb();
+ dma_wmb();
txd->buffer = 0;
}
wmb();