From f072218cca5b076dd99f3dfa3aaafedfd0023a51 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 27 Jun 2019 23:19:09 +0200 Subject: [PATCH] r8169: remove not needed call to dma_sync_single_for_device DMA_API_HOWTO.txt includes an example explaining when dma_sync_single_for_device() is not needed, and that example matches our use case. The buffer isn't changed by the CPU and direction is DMA_FROM_DEVICE, so we can remove the call to dma_sync_single_for_device(). Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 1b5f125e1b6c..a73f2532115b 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -5785,7 +5785,6 @@ static struct sk_buff *rtl8169_try_rx_copy(void *data, skb = napi_alloc_skb(&tp->napi, pkt_size); if (skb) skb_copy_to_linear_data(skb, data, pkt_size); - dma_sync_single_for_device(d, addr, pkt_size, DMA_FROM_DEVICE); return skb; } -- 2.20.1