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stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set

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Clear the TX COE bit when force_thresh_dma_mode is set even hardware
dma capability says support.

Tested on BF609.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sonic Zhang 2015-01-22 14:55:57 +08:00 committed by David S. Miller
parent c405abe2e0
commit dec2165ff3
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -2755,7 +2755,11 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
priv->plat->enh_desc = priv->dma_cap.enh_desc;
priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
priv->plat->tx_coe = priv->dma_cap.tx_coe;
/* TXCOE doesn't work in thresh DMA mode */
if (priv->plat->force_thresh_dma_mode)
priv->plat->tx_coe = 0;
else
priv->plat->tx_coe = priv->dma_cap.tx_coe;
if (priv->dma_cap.rx_coe_type2)
priv->plat->rx_coe = STMMAC_RX_COE_TYPE2;