From d4ed7463d02aef4b2270ec2a680813cd8b17def7 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Fri, 23 Aug 2019 20:07:26 +0200 Subject: [PATCH] r8169: fix DMA issue on MIPS platform As reported by Aaro this patch causes network problems on MIPS Loongson platform. Therefore revert it. Fixes: f072218cca5b ("r8169: remove not needed call to dma_sync_single_for_device") Signed-off-by: Heiner Kallweit Reported-by: Aaro Koskinen Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 910944120a65..6182e7d33e01 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -5822,6 +5822,10 @@ process_pkt: skb->tail += pkt_size; skb->len = pkt_size; + dma_sync_single_for_device(tp_to_dev(tp), + le64_to_cpu(desc->addr), + pkt_size, DMA_FROM_DEVICE); + rtl8169_rx_csum(skb, status); skb->protocol = eth_type_trans(skb, dev); -- 2.30.2