From 02ff05c49d7804f2574f358a937b43a41d15e36e Mon Sep 17 00:00:00 2001
From: David Brownell <dbrownell@users.sourceforge.net>
Date: Wed, 5 Mar 2008 18:51:19 -0800
Subject: [PATCH] net/enc28j60: oops fix
Prevent oops on enc28j60 packet RX: make sure buffers are aligned.
Not all architectures support unaligned accesses in kernel space.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Claudio Lanconelli <lanconelli.claudio@eptar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/enc28j60.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
index 0809a6a5a286..46a90e9ec563 100644
--- a/drivers/net/enc28j60.c
+++ b/drivers/net/enc28j60.c
@@ -900,7 +900,7 @@ static void enc28j60_hw_rx(struct net_device *ndev)
if (RSV_GETBIT(rxstat, RSV_LENCHECKERR))
ndev->stats.rx_frame_errors++;
} else {
- skb = dev_alloc_skb(len);
+ skb = dev_alloc_skb(len + NET_IP_ALIGN);
if (!skb) {
if (netif_msg_rx_err(priv))
dev_err(&ndev->dev,
@@ -908,6 +908,7 @@ static void enc28j60_hw_rx(struct net_device *ndev)
ndev->stats.rx_dropped++;
} else {
skb->dev = ndev;
+ skb_reserve(skb, NET_IP_ALIGN);
/* copy the packet from the receive buffer */
enc28j60_mem_read(priv, priv->next_pk_ptr + sizeof(rsv),
len, skb_put(skb, len));
--
GitLab