iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

octeon_ep: remove dma sync in trasmit path

Browse Source 
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shinas Rasheed 2023-11-14 05:45:33 -08:00 committed by David S. Miller
parent 5827fe2bc9
commit 2fba506995
1 changed files with 0 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/marvell/octeon_ep/octep_main.c
View File

@ -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;
}