linux-kernel - [PATCH v2] staging: rtl8712: fix Prefer ether_addr

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Date:	Fri, 30 Jan 2015 00:11:36 +0200
From:	Heba Aamer <heba93aamer@...il.com>
To:	devel@...verdev.osuosl.org
Cc:	Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
	gregkh@...uxfoundation.org, tapaswenipathak@...il.com,
	thomas@...uk.net, sudipm.mukherjee@...il.com,
	rickard_strandqvist@...ctrumdigital.se,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] staging: rtl8712: fix Prefer ether_addr_copy() over
 memcpy()

This patch fixes the following checkpatch.pl warning:
Prefer ether_addr_copy() over memcpy()
if the Ethernet addresses are __aligned(2)

pahole showed that the struct used pnetdev->dev_addr
is aligned to u16.

Moreover mac is a simple array, pdata is a pointer that
starts from an even offset.

Signed-off-by: Heba Aamer <heba93aamer@...il.com>
---
v2: modifying patch description

 drivers/staging/rtl8712/usb_intf.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8712/usb_intf.c b/drivers/staging/rtl8712/usb_intf.c
index 15f0d42..a2f2dfb 100644
--- a/drivers/staging/rtl8712/usb_intf.c
+++ b/drivers/staging/rtl8712/usb_intf.c
@@ -463,7 +463,7 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
 				/* Use the mac address stored in the Efuse
 				 * offset = 0x12 for usb in efuse
 				 */
-				memcpy(mac, &pdata[0x12], ETH_ALEN);
+				ether_addr_copy(mac, &pdata[0x12]);
 			}
 			eeprom_CustomerID = pdata[0x52];
 			switch (eeprom_CustomerID) {
@@ -580,7 +580,7 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
 		} else
 			dev_info(&udev->dev,
 				"r8712u: MAC Address from efuse = %pM\n", mac);
-		memcpy(pnetdev->dev_addr, mac, ETH_ALEN);
+		ether_addr_copy(pnetdev->dev_addr, mac);
 	}
 	/* step 6. Load the firmware asynchronously */
 	if (rtl871x_load_fw(padapter))
-- 
1.7.9.5

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