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Message-ID: <20231114134535.2455051-3-srasheed@marvell.com> Date: Tue, 14 Nov 2023 05:45:33 -0800 From: Shinas Rasheed <srasheed@...vell.com> To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <hgani@...vell.com>, <vimleshk@...vell.com>, <egallen@...hat.com>, <mschmidt@...hat.com>, <pabeni@...hat.com>, <horms@...nel.org>, <kuba@...nel.org>, <davem@...emloft.net>, <wizhao@...hat.com>, <konguyen@...hat.com>, Shinas Rasheed <srasheed@...vell.com>, "Veerasenareddy Burru" <vburru@...vell.com>, Sathesh Edara <sedara@...vell.com>, Eric Dumazet <edumazet@...gle.com> Subject: [PATCH net-next v3 RESEND 2/4] octeon_ep: remove dma sync in trasmit path Cleanup dma sync calls for scatter gather mappings, since they are coherent allocations and do not need explicit sync to be called. Signed-off-by: Shinas Rasheed <srasheed@...vell.com> --- V3: - No changes. V2: https://lore.kernel.org/all/20231024145119.2366588-3-srasheed@marvell.com/ - Provided more details in changelog V1: https://lore.kernel.org/all/20231023114449.2362147-2-srasheed@marvell.com/ drivers/net/ethernet/marvell/octeon_ep/octep_main.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c index 2c86b911a380..1c02304677c9 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -872,9 +872,6 @@ static netdev_tx_t octep_start_xmit(struct sk_buff *skb, if (dma_mapping_error(iq->dev, dma)) goto dma_map_err; - dma_sync_single_for_cpu(iq->dev, tx_buffer->sglist_dma, - OCTEP_SGLIST_SIZE_PER_PKT, - DMA_TO_DEVICE); memset(sglist, 0, OCTEP_SGLIST_SIZE_PER_PKT); sglist[0].len[3] = len; sglist[0].dma_ptr[0] = dma; @@ -894,10 +891,6 @@ static netdev_tx_t octep_start_xmit(struct sk_buff *skb, frag++; si++; } - dma_sync_single_for_device(iq->dev, tx_buffer->sglist_dma, - OCTEP_SGLIST_SIZE_PER_PKT, - DMA_TO_DEVICE); - hw_desc->dptr = tx_buffer->sglist_dma; } -- 2.25.1
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