From: Felix Fietkau Date: Wed, 26 Aug 2020 17:48:14 +0200 Subject: [PATCH] net: ethernet: mtk_eth_soc: drop descriptor cpu-own bit check in qdma tx cleanup mtk_poll_tx_qdma already checks the MTK_QTX_DRX_PTR register, which points at the last completed descriptor. To slightly improve performance, also remove the register bit which forces the hardware to write back this bit earlier. Signed-off-by: Felix Fietkau --- --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1368,9 +1368,6 @@ static int mtk_poll_tx_qdma(struct mtk_e int mac = 0; desc = mtk_qdma_phys_to_virt(ring, desc->txd2); - if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) - break; - tx_buf = mtk_desc_to_tx_buf(ring, desc); if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) mac = 1; @@ -2203,7 +2200,7 @@ static int mtk_start_dma(struct mtk_eth if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { mtk_w32(eth, - MTK_TX_WB_DDONE | MTK_TX_DMA_EN | + MTK_TX_DMA_EN | MTK_TX_BT_32DWORDS | MTK_NDP_CO_PRO | MTK_RX_DMA_EN | MTK_RX_2B_OFFSET | MTK_RX_BT_32DWORDS,