net: calxedaxgmac: drop some unnecessary register writes

The interrupts have already been cleared, so we don't need to clear them
again. Also, we could miss interrupts if they are cleared, but we don't
process the packet.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c
index 84cd40e4f081dc76d012cfe7f1210a99bab33dd5..826321910efc481ff39ac4fb3cf03a0ac5ea1d96 100644 (file)
--- a/drivers/net/ethernet/calxeda/xgmac.c
+++ b/drivers/net/ethernet/calxeda/xgmac.c
@@ -846,9 +846,6 @@ static void xgmac_free_dma_desc_rings(struct xgmac_priv *priv)
 static void xgmac_tx_complete(struct xgmac_priv *priv)
 {
        int i;
-       void __iomem *ioaddr = priv->base;
-
-       writel(DMA_STATUS_TU | DMA_STATUS_NIS, ioaddr + XGMAC_DMA_STATUS);
 
        while (dma_ring_cnt(priv->tx_head, priv->tx_tail, DMA_TX_RING_SZ)) {
                unsigned int entry = priv->tx_tail;
@@ -1139,9 +1136,6 @@ static int xgmac_rx(struct xgmac_priv *priv, int limit)
                struct sk_buff *skb;
                int frame_len;
 
-               writel(DMA_STATUS_RI | DMA_STATUS_NIS,
-                      priv->base + XGMAC_DMA_STATUS);
-
                entry = priv->rx_tail;
                p = priv->dma_rx + entry;
                if (desc_get_owner(p))