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authorHeiner Kallweit <hkallweit1@gmail.com>2019-06-27 23:19:09 +0200
committerDavid S. Miller <davem@davemloft.net>2019-06-29 12:29:39 -0700
commitf072218cca5b076dd99f3dfa3aaafedfd0023a51 (patch)
tree116642c249c9fb87a4837c6e64c4efacca1888d0 /drivers/net/ethernet/realtek
parentr8169: consider that 32 Bit DMA is the default (diff)
downloadlinux-dev-f072218cca5b076dd99f3dfa3aaafedfd0023a51.tar.xz
linux-dev-f072218cca5b076dd99f3dfa3aaafedfd0023a51.zip
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 <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/realtek')
-rw-r--r--drivers/net/ethernet/realtek/r8169_main.c1
1 files changed, 0 insertions, 1 deletions
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;
}