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ath11k: Remove unnecessary data sync to cpu on monitor buffer

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Monitor ring Rx buffer is not really modified between dma map
and unmap. So remove the unnecssary data sync before dma unmap.
This does not fix any visible issue, found in code review.

Compile tested only.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1602744454-22969-1-git-send-email-vthiagar@codeaurora.org
This commit is contained in:
Vasanthakumar Thiagarajan 2020-10-15 12:17:34 +05:30 • committed by Kalle Valo
parent 0f01dcb89b
commit bafdbd79aa
1 changed files with 0 additions and 4 deletions
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4
drivers/net/wireless/ath/ath11k/dp_rx.c
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@ -2856,10 +2856,6 @@ static int ath11k_dp_rx_reap_mon_status_ring(struct ath11k_base *ab, int mac_id,
rxcb = ATH11K_SKB_RXCB(skb);
dma_sync_single_for_cpu(ab->dev, rxcb->paddr,
skb->len + skb_tailroom(skb),
DMA_FROM_DEVICE);
dma_unmap_single(ab->dev, rxcb->paddr,
skb->len + skb_tailroom(skb),
DMA_BIDIRECTIONAL);