From 1fe4964e832e32e2c5706a0ed174c9f8e0419efd Mon Sep 17 00:00:00 2001 Message-Id: <1fe4964e832e32e2c5706a0ed174c9f8e0419efd.1563795486.git.joabreu@synopsys.com> From: Jose Abreu Date: Mon, 22 Jul 2019 13:37:51 +0200 Subject: [PATCH net] net: stmmac: Add memory barrier Signed-off-by: Jose Abreu --- Cc: Giuseppe Cavallaro Cc: Alexandre Torgue Cc: Jose Abreu Cc: "David S. Miller" Cc: Maxime Coquelin Cc: netdev@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 7a6920098dd0..207c3755bcc5 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3425,6 +3425,9 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) continue; } + /* Full memory barrier */ + mb(); + dma_sync_single_for_cpu(priv->device, buf->addr, frame_len, DMA_FROM_DEVICE); skb_copy_to_linear_data(skb, page_address(buf->page), -- 2.7.4