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Date: Thu, 22 Jan 2015 14:55:57 +0800 From: Sonic Zhang <sonic.adi@...il.com> To: Giuseppe Cavallaro <peppe.cavallaro@...com>, "David S. Miller" <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <adi-buildroot-devel@...ts.sourceforge.net>, Sonic Zhang <sonic.zhang@...log.com> Subject: [PATCH 2/3] stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set From: Sonic Zhang <sonic.zhang@...log.com> 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@...log.com> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5edfc8a..7a7385a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2746,7 +2746,11 @@ 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; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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