linux-kernel - [PATCH] ax88179_178a: Merge memcpy + le32_to_cpus to get_unaligned

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Message-Id: <20190719090714.19037-1-hslester96@gmail.com>
Date:   Fri, 19 Jul 2019 17:07:15 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     "David S . Miller" <davem@...emloft.net>,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH] ax88179_178a: 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/ax88179_178a.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
index 0bc457ba8574..72d165114b67 100644
--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -1366,8 +1366,7 @@ static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 		return 0;
 
 	skb_trim(skb, skb->len - 4);
-	memcpy(&rx_hdr, skb_tail_pointer(skb), 4);
-	le32_to_cpus(&rx_hdr);
+	rx_hdr = get_unaligned_le32(skb_tail_pointer(skb));
 
 	pkt_cnt = (u16)rx_hdr;
 	hdr_off = (u16)(rx_hdr >> 16);
-- 
2.20.1