From: Thierry Reding <thierry.reding@gmail.com>
To: "David S . Miller" <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Joao Pinto <Joao.Pinto@synopsys.com>,
Jon Hunter <jonathanh@nvidia.com>,
Mikko Perttunen <cyndis@kapsi.fi>,
netdev@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 5/9] net: stmmac: Check for DMA mapping errors
Date: Fri, 10 Mar 2017 17:34:57 +0100 [thread overview]
Message-ID: <20170310163501.31811-6-thierry.reding@gmail.com> (raw)
In-Reply-To: <20170310163501.31811-1-thierry.reding@gmail.com>
From: Thierry Reding <treding@nvidia.com>
When DMA mapping an SKB fragment, the mapping must be checked for
errors, otherwise the DMA debug code will complain upon unmap.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index ce6d7e791f3f..eba9088e1f61 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2079,6 +2079,8 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
des = skb_frag_dma_map(priv->device, frag, 0,
skb_frag_size(frag),
DMA_TO_DEVICE);
+ if (dma_mapping_error(priv->device, des))
+ goto dma_map_err;
stmmac_tso_allocator(priv, des, skb_frag_size(frag),
(i == nfrags - 1));
--
2.12.0
next prev parent reply other threads:[~2017-03-10 16:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-10 16:34 [PATCH v2 0/9] net: stmmac: Fixes and Tegra186 support Thierry Reding
2017-03-10 16:34 ` [PATCH v2 1/9] net: stmmac: Rename clk_ptp_ref clock to ptp_ref Thierry Reding
2017-03-20 15:18 ` Rob Herring
2017-03-10 16:34 ` [PATCH v2 2/9] net: stmmac: Stop PHY and remove TX timer on error Thierry Reding
2017-03-10 16:34 ` [PATCH v2 3/9] net: stmmac: Disable PTP reference clock " Thierry Reding
2017-03-10 16:34 ` [PATCH v2 4/9] net: stmmac: Balance PTP reference clock enable/disable Thierry Reding
2017-03-10 16:34 ` Thierry Reding [this message]
2017-03-10 16:34 ` [PATCH v2 6/9] net: stmmac: Parse FIFO sizes from feature registers Thierry Reding
2017-03-10 16:34 ` [PATCH v2 7/9] net: stmmac: Program RX queue size and flow control Thierry Reding
2017-03-10 16:35 ` [PATCH v2 8/9] net: stmmac: dwc-qos: Split out ->probe() and ->remove() Thierry Reding
2017-03-10 16:35 ` [PATCH v2 9/9] net: stmmac: dwc-qos: Add Tegra186 support Thierry Reding
2017-03-13 6:35 ` [PATCH v2 0/9] net: stmmac: Fixes and " David Miller
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