[PATCH net-next v3 2/4] octeon_ep: remove dma sync in trasmit path
From: Shinas Rasheed <srasheed@marvell.com>
Date: 2023-10-27 12:17:08
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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@marvell.com> --- V3: - No changes. V2: https://lore.kernel.org/all/20231024145119.2366588-3-srasheed@marvell.com/ (local) - Provided more details in changelog V1: https://lore.kernel.org/all/20231023114449.2362147-2-srasheed@marvell.com/ (local) 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