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29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
From a12157095a8a59eeaeb7c9efe70495288140159c Mon Sep 17 00:00:00 2001
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From: Hari Chandrakanthan <quic_haric@quicinc.com>
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Date: Mon, 10 Jan 2022 12:38:10 +0530
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Subject: [PATCH] ath11k: provide access of the dma buffer back to dma device
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In ath11k_dbring_bufs_replenish, after accessing paddr which is a member of
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ath11k_dbring_element, provide the access of the buffer back to
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dma device by using dma_sync_single_for_device.
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Also the gfp flag to used inside ath11k_dbring_fill_bufs is changed
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from GFP_KERNEL to GFP_ATOMIC as the buffers are allocated inside spin lock.
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Signed-off-by: Hari Chandrakanthan <quic_haric@quicinc.com>
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---
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drivers/net/wireless/ath/ath11k/dbring.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/net/wireless/ath/ath11k/dbring.c
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+++ b/drivers/net/wireless/ath/ath11k/dbring.c
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@@ -82,6 +82,8 @@ static int ath11k_dbring_bufs_replenish(
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buff->paddr = paddr;
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+ dma_sync_single_for_device(ab->dev, paddr, ring->buf_sz, DMA_FROM_DEVICE);
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+
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cookie = FIELD_PREP(DP_RXDMA_BUF_COOKIE_PDEV_ID, ar->pdev_idx) |
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FIELD_PREP(DP_RXDMA_BUF_COOKIE_BUF_ID, buf_id);
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