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