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pch_gbe: fixed the issue which receives an unnecessary packet.

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commit 5229d87edc upstream.

This patch fixed the issue which receives an unnecessary packet before link

When using PHY of GMII, an unnecessary packet is received,
And it becomes impossible to receive a packet after link up.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Toshiharu Okada
2011-09-01 14:20:07 +00:00
committed by Greg Kroah-Hartman
parent a166666fe3
commit 20149346fc
1 changed files with 14 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/pch_gbe/pch_gbe_main.c
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@@ -717,13 +717,6 @@ static void pch_gbe_configure_rx(struct pch_gbe_adapter *adapter)
iowrite32(rdba, &hw->reg->RX_DSC_BASE);
iowrite32(rdlen, &hw->reg->RX_DSC_SIZE);
iowrite32((rdba + rdlen), &hw->reg->RX_DSC_SW_P);
/* Enables Receive DMA */
rxdma = ioread32(&hw->reg->DMA_CTRL);
rxdma |= PCH_GBE_RX_DMA_EN;
iowrite32(rxdma, &hw->reg->DMA_CTRL);
/* Enables Receive */
iowrite32(PCH_GBE_MRE_MAC_RX_EN, &hw->reg->MAC_RX_EN);
}
/**
@@ -1097,6 +1090,19 @@ void pch_gbe_update_stats(struct pch_gbe_adapter *adapter)
spin_unlock_irqrestore(&adapter->stats_lock, flags);
}
static void pch_gbe_start_receive(struct pch_gbe_hw *hw)
{
u32 rxdma;
/* Enables Receive DMA */
rxdma = ioread32(&hw->reg->DMA_CTRL);
rxdma |= PCH_GBE_RX_DMA_EN;
iowrite32(rxdma, &hw->reg->DMA_CTRL);
/* Enables Receive */
iowrite32(PCH_GBE_MRE_MAC_RX_EN, &hw->reg->MAC_RX_EN);
return;
}
/**
* pch_gbe_intr - Interrupt Handler
* @irq: Interrupt number
@@ -1717,6 +1723,7 @@ int pch_gbe_up(struct pch_gbe_adapter *adapter)
pch_gbe_alloc_tx_buffers(adapter, tx_ring);
pch_gbe_alloc_rx_buffers(adapter, rx_ring, rx_ring->count);
adapter->tx_queue_len = netdev->tx_queue_len;
pch_gbe_start_receive(&adapter->hw);
mod_timer(&adapter->watchdog_timer, jiffies);