Commit 2fba5069 authored by Shinas Rasheed's avatar Shinas Rasheed Committed by David S. Miller
Browse files

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: default avatarShinas Rasheed <srasheed@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5827fe2b

drivers/net/ethernet/marvell/octeon_ep/octep_main.c

+0 −7
Original line number Diff line number Diff line
@@ -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;

	}