From: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
To: ath11k@lists.infradead.org
Subject: [PATCH] ath11k: Remove unnecessary data sync to cpu on monitor buffer
Date: Thu, 15 Oct 2020 11:46:44 +0530 [thread overview]
Message-ID: <1602742604-22430-1-git-send-email-vthiagar@codeaurora.org> (raw)
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>
---
drivers/net/wireless/ath/ath11k/dp_rx.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index 0162532..4455e5af 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -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);
--
2.7.4
--
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next reply other threads:[~2020-10-15 6:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 6:16 Vasanthakumar Thiagarajan [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-10-15 6:47 [PATCH] ath11k: Remove unnecessary data sync to cpu on monitor buffer Vasanthakumar Thiagarajan
2020-11-07 7:59 ` Kalle Valo
2020-10-08 11:10 Vasanthakumar Thiagarajan
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