From 08d43051d1e441def9e2535fcad96fd094f41932 Mon Sep 17 00:00:00 2001 From: Balamurugan Mahalingam Date: Mon, 5 Sep 2022 20:26:03 -0700 Subject: [PATCH] ath12k: skip cache synchronization in the tx completion path Skip buffer cache synchronization in the tx completion path as the buffer is not modified. Signed-off-by: Balamurugan Mahalingam --- drivers/net/wireless/ath/ath12k/dp_tx.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/dp_tx.c b/drivers/net/wireless/ath/ath12k/dp_tx.c index fd908f9..3f7d433 100644 --- a/drivers/net/wireless/ath/ath12k/dp_tx.c +++ b/drivers/net/wireless/ath/ath12k/dp_tx.c @@ -10,6 +10,7 @@ #include "debugfs_sta.h" #include "hw.h" #include "peer.h" +#include static enum hal_tcl_encap_type ath12k_dp_tx_get_encap_type(struct ath12k_vif *arvif, struct sk_buff *skb) @@ -347,10 +348,12 @@ static void ath12k_dp_tx_free_txbuf(struct ath12k_base *ab, skb_cb = ATH12K_SKB_CB(msdu); - dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); + dma_unmap_single_attrs(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE, + DMA_ATTR_SKIP_CPU_SYNC); if (unlikely(skb_cb->paddr_ext_desc)) - dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc, - sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE); + dma_unmap_single_attrs(ab->dev, skb_cb->paddr_ext_desc, + sizeof(struct hal_tx_msdu_ext_desc), + DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); dev_kfree_skb_any(msdu); @@ -642,10 +645,12 @@ static void ath12k_dp_tx_complete_msdu(struct ath12k *ar, skb_cb = ATH12K_SKB_CB(msdu); - dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); + dma_unmap_single_attrs(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE, + DMA_ATTR_SKIP_CPU_SYNC); if (unlikely(skb_cb->paddr_ext_desc)) - dma_unmap_single(ab->dev, skb_cb->paddr_ext_desc, - sizeof(struct hal_tx_msdu_ext_desc), DMA_TO_DEVICE); + dma_unmap_single_attrs(ab->dev, skb_cb->paddr_ext_desc, + sizeof(struct hal_tx_msdu_ext_desc), + DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); flags = skb_cb->flags; -- 2.17.1