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Commit 9169963d authored by Rob Herring's avatar Rob Herring Committed by David S. Miller
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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: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0ec6d343

drivers/net/ethernet/calxeda/xgmac.c

+0 −6
Original line number Diff line number Diff line
@@ -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))