From: Sonic Zhang Date: Thu, 22 Jan 2015 06:55:57 +0000 (+0800) Subject: stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dec2165ff38a99f937fe61875d102c6c8596c815;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set 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 Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 6e2a8fa07da5..5ef493aa5387 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -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;