From: Ben Dooks <ben.dooks@codethink.co.uk>
To: netdev@vger.kernel.org
Cc: oneukum@suse.com, davem@davemloft.net, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, steve.glendinning@shawell.net,
linux-kernel@lists.codethink.co.uk,
Ben Dooks <ben.dooks@codethink.co.uk>
Subject: [PATCH 3/4] usbnet: smsc95xx: fix memcpy for accessing rx-data
Date: Wed, 14 Nov 2018 11:50:21 +0000 [thread overview]
Message-ID: <20181114115022.9584-4-ben.dooks@codethink.co.uk> (raw)
In-Reply-To: <20181114115022.9584-1-ben.dooks@codethink.co.uk>
Change the RX code to use get_unaligned_le32() instead of the combo
of memcpy and cpu_to_le32s(&var).
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
drivers/net/usb/smsc95xx.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 50e97a159500..8f7c473f3260 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -618,9 +618,7 @@ static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
return;
}
- memcpy(&intdata, urb->transfer_buffer, 4);
- le32_to_cpus(&intdata);
-
+ intdata = get_unaligned_le32(urb->transfer_buffer);
netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
if (intdata & INT_ENP_PHY_INT_)
@@ -1922,8 +1920,7 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
unsigned char *packet;
u16 size;
- memcpy(&header, skb->data, sizeof(header));
- le32_to_cpus(&header);
+ header = get_unaligned_le32(skb->data);
skb_pull(skb, 4 + NET_IP_ALIGN);
packet = skb->data;
--
2.19.1
next prev parent reply other threads:[~2018-11-14 11:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-14 11:50 SMSC95xx driver updates (round 1) Ben Dooks
2018-11-14 11:50 ` [PATCH 1/4] usbnet: smsc95xx: fix rx packet alignment Ben Dooks
2018-11-14 11:50 ` [PATCH 2/4] usbnet: smsc95xx: simplify tx_fixup code Ben Dooks
2018-11-14 11:50 ` Ben Dooks [this message]
2018-11-14 11:50 ` [PATCH 4/4] usbnet: smsc95xx: check for csum being in last four bytes Ben Dooks
2018-11-14 15:59 ` Sergei Shtylyov
2018-11-14 11:58 ` SMSC95xx driver updates (round 1) Oliver Neukum
2018-11-15 18:06 ` Woojung.Huh
2018-11-16 10:49 ` Ben Dooks
2018-11-17 4:16 ` David Miller
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