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Subject[PATCH 4.4 022/190] net: qca_spi: Fix alignment issues in rx path
Date
4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Wahren <stefan.wahren@i2se.com>


[ Upstream commit 8d66c30b12ed3cb533696dea8b9a9eadd5da426a ]

The qca_spi driver causes alignment issues on ARM devices.
So fix this by using netdev_alloc_skb_ip_align().

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/qualcomm/qca_spi.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -296,8 +296,9 @@ qcaspi_receive(struct qcaspi *qca)

/* Allocate rx SKB if we don't have one available. */
if (!qca->rx_skb) {
- qca->rx_skb = netdev_alloc_skb(net_dev,
- net_dev->mtu + VLAN_ETH_HLEN);
+ qca->rx_skb = netdev_alloc_skb_ip_align(net_dev,
+ net_dev->mtu +
+ VLAN_ETH_HLEN);
if (!qca->rx_skb) {
netdev_dbg(net_dev, "out of RX resources\n");
qca->stats.out_of_mem++;
@@ -377,7 +378,7 @@ qcaspi_receive(struct qcaspi *qca)
qca->rx_skb, qca->rx_skb->dev);
qca->rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
netif_rx_ni(qca->rx_skb);
- qca->rx_skb = netdev_alloc_skb(net_dev,
+ qca->rx_skb = netdev_alloc_skb_ip_align(net_dev,
net_dev->mtu + VLAN_ETH_HLEN);
if (!qca->rx_skb) {
netdev_dbg(net_dev, "out of RX resources\n");
@@ -759,7 +760,8 @@ qcaspi_netdev_init(struct net_device *de
if (!qca->rx_buffer)
return -ENOBUFS;

- qca->rx_skb = netdev_alloc_skb(dev, qca->net_dev->mtu + VLAN_ETH_HLEN);
+ qca->rx_skb = netdev_alloc_skb_ip_align(dev, qca->net_dev->mtu +
+ VLAN_ETH_HLEN);
if (!qca->rx_skb) {
kfree(qca->rx_buffer);
netdev_info(qca->net_dev, "Failed to allocate RX sk_buff.\n");

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