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sfc: don't call tx_limit_len if NIC type doesn't have one 

EF100 doesn't need to split up large DMAs.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2020-07-02 17:30:23 +01:00 committed by David S. Miller
parent a81dcd85a7
commit 79de6e7cb8
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/sfc/tx_common.c
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@ -298,7 +298,11 @@ struct efx_tx_buffer *efx_tx_map_chunk(struct efx_tx_queue *tx_queue,
/* Map the fragment taking account of NIC-dependent DMA limits. */
do {
buffer = efx_tx_queue_get_insert_buffer(tx_queue);
dma_len = nic_type->tx_limit_len(tx_queue, dma_addr, len);
if (nic_type->tx_limit_len)
dma_len = nic_type->tx_limit_len(tx_queue, dma_addr, len);
else
dma_len = len;
buffer->len = dma_len;
buffer->dma_addr = dma_addr;