linux-kernel - [PATCH] usbnet: smsc75xx: Merge memcpy + le32_to_cpus to get_unaligned

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Date:   Fri, 19 Jul 2019 16:27:31 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Steve Glendinning <steve.glendinning@...well.net>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH] usbnet: smsc75xx: Merge memcpy + le32_to_cpus to get_unaligned_le32

Merge the combo use of memcpy and le32_to_cpus.
Use get_unaligned_le32 instead.
This simplifies the code.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 drivers/net/usb/smsc75xx.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index 1417a22962a1..7fac9db5380d 100644
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -661,8 +661,7 @@ static void smsc75xx_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);
 
@@ -2181,12 +2180,10 @@ static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 		struct sk_buff *ax_skb;
 		unsigned char *packet;
 
-		memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
-		le32_to_cpus(&rx_cmd_a);
+		rx_cmd_a = get_unaligned_le32(skb->data);
 		skb_pull(skb, 4);
 
-		memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
-		le32_to_cpus(&rx_cmd_b);
+		rx_cmd_b = get_unaligned_le32(skb->data);
 		skb_pull(skb, 4 + RXW_PADDING);
 
 		packet = skb->data;
-- 
2.20.1