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net: calxedaxgmac: remove explicit rx dma buffer polling 

New received frames will trigger the rx DMA to poll the DMA descriptors,
so there is no need to tell the h/w to poll. We also want to enable
dropping frames from the fifo when there is no buffer.

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 06:22:20 +00:00 committed by David S. Miller
parent 0aefa8ecd8
commit b821bd8e5a
1 changed files with 1 additions and 3 deletions
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4
drivers/net/ethernet/calxeda/xgmac.c
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@ -966,7 +966,7 @@ static int xgmac_hw_init(struct net_device *dev)
ctrl |= XGMAC_CONTROL_IPC; ctrl |= XGMAC_CONTROL_IPC;
writel(ctrl, ioaddr + XGMAC_CONTROL); writel(ctrl, ioaddr + XGMAC_CONTROL);
writel(DMA_CONTROL_DFF | DMA_CONTROL_OSF, ioaddr + XGMAC_DMA_CONTROL); writel(DMA_CONTROL_OSF, ioaddr + XGMAC_DMA_CONTROL);
/* Set the HW DMA mode and the COE */ /* Set the HW DMA mode and the COE */
writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA | writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA |
@ -1180,8 +1180,6 @@ static int xgmac_rx(struct xgmac_priv *priv, int limit)
xgmac_rx_refill(priv); xgmac_rx_refill(priv);
writel(1, priv->base + XGMAC_DMA_RX_POLL);
return count; return count;
} }