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Message-ID: <20231027121639.2382565-3-srasheed@marvell.com>
Date: Fri, 27 Oct 2023 05:16:37 -0700
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 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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