Several DMA related functions (such as the dma_map_xxx functions) are not used with high latency devices and don't need to be invoked in this case.
A few other execution paths are not applicable for high latency devices and can be skipped. Signed-off-by: Erik Stromdahl <[email protected]> --- drivers/net/wireless/ath/ath10k/htc.c | 19 ++++++++++++------- drivers/net/wireless/ath/ath10k/htt_rx.c | 3 ++- drivers/net/wireless/ath/ath10k/htt_tx.c | 9 +++++++-- drivers/net/wireless/ath/ath10k/txrx.c | 5 +++-- 4 files changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c index e5c80f582ff5..75c2a3ea7ec9 100644 --- a/drivers/net/wireless/ath/ath10k/htc.c +++ b/drivers/net/wireless/ath/ath10k/htc.c @@ -53,7 +53,8 @@ static inline void ath10k_htc_restore_tx_skb(struct ath10k_htc *htc, { struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb); - dma_unmap_single(htc->ar->dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE); + if (!htc->ar->is_high_latency) + dma_unmap_single(htc->ar->dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE); skb_pull(skb, sizeof(struct ath10k_htc_hdr)); } @@ -137,11 +138,14 @@ int ath10k_htc_send(struct ath10k_htc *htc, ath10k_htc_prepare_tx_skb(ep, skb); skb_cb->eid = eid; - skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, DMA_TO_DEVICE); - ret = dma_mapping_error(dev, skb_cb->paddr); - if (ret) { - ret = -EIO; - goto err_credits; + if (!ar->is_high_latency) { + skb_cb->paddr = dma_map_single(dev, skb->data, skb->len, + DMA_TO_DEVICE); + ret = dma_mapping_error(dev, skb_cb->paddr); + if (ret) { + ret = -EIO; + goto err_credits; + } } sg_item.transfer_id = ep->eid; @@ -157,7 +161,8 @@ int ath10k_htc_send(struct ath10k_htc *htc, return 0; err_unmap: - dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE); + if (!ar->is_high_latency) + dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE); err_credits: if (ep->tx_credit_flow_enabled) { spin_lock_bh(&htc->tx_lock); diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 7461555ccad5..569edd0720c6 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2541,7 +2541,8 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb) break; } case HTT_T2H_MSG_TYPE_TX_COMPL_IND: - ath10k_htt_rx_tx_compl_ind(htt->ar, skb); + if (!ar->is_high_latency) + ath10k_htt_rx_tx_compl_ind(htt->ar, skb); break; case HTT_T2H_MSG_TYPE_SEC_IND: { struct ath10k *ar = htt->ar; diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index a3d69f852e38..82d01139ff92 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -409,6 +409,9 @@ int ath10k_htt_tx_start(struct ath10k_htt *htt) if (htt->tx_mem_allocated) return 0; + if (ar->is_high_latency) + return 0; + ret = ath10k_htt_tx_alloc_buf(htt); if (ret) goto free_idr_pending_tx; @@ -445,7 +448,8 @@ void ath10k_htt_tx_destroy(struct ath10k_htt *htt) return; ath10k_htt_tx_free_cont_txbuf(htt); - ath10k_htt_tx_free_txq(htt); + if (!htt->ar->is_high_latency) + ath10k_htt_tx_free_txq(htt); ath10k_htt_tx_free_cont_frag_desc(htt); ath10k_htt_tx_free_txdone_fifo(htt); htt->tx_mem_allocated = false; @@ -935,7 +939,8 @@ int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) return 0; err_unmap_msdu: - dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); + if (!ar->is_high_latency) + dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); err_free_txdesc: dev_kfree_skb_any(txdesc); err_free_msdu_id: diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c index d4986f626c35..fae143e4dcfa 100644 --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -90,11 +90,12 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt, ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id); ath10k_htt_tx_dec_pending(htt); - if (htt->num_pending_tx == 0) + if (!ar->is_high_latency && (htt->num_pending_tx == 0)) wake_up(&htt->empty_tx_wq); spin_unlock_bh(&htt->tx_lock); - dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); + if (!ar->is_high_latency) + dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); ath10k_report_offchan_tx(htt->ar, msdu); -- 2.14.1 _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k
