From: Rob Herring Date: Mon, 5 Nov 2012 06:22:20 +0000 (+0000) Subject: net: calxedaxgmac: remove explicit rx dma buffer polling X-Git-Tag: v3.8-rc1~139^2~434 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=b821bd8e5a4413c8e28e64d878720978883ebfc8;p=~emulex%2Finfiniband.git 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index 7f5fd17c800..728fcef4e68 100644 --- a/drivers/net/ethernet/calxeda/xgmac.c +++ b/drivers/net/ethernet/calxeda/xgmac.c @@ -966,7 +966,7 @@ static int xgmac_hw_init(struct net_device *dev) ctrl |= XGMAC_CONTROL_IPC; 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 */ 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); - writel(1, priv->base + XGMAC_DMA_RX_POLL); - return count; }