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net: calxedaxgmac: drop some unnecessary register writes

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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>
This commit is contained in:
Rob Herring 2012-11-05 06:22:22 +00:00 committed by David S. Miller
parent 0ec6d343f7
commit 9169963d80
1 changed files with 0 additions and 6 deletions
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6
drivers/net/ethernet/calxeda/xgmac.c
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@ -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))