linux-kernel - [044/129] asix: fix setting custom MAC address on Asix 88178 devices

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Date:	Mon, 23 Jan 2012 18:34:24 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	Jussi Kivilinna <jussi.kivilinna@...et.fi>,
	Grant Grundler <grundler@...omium.org>,
	Allan Chou <allan@...x.com.tw>,
	"David S. Miller" <davem@...emloft.net>
Subject: [044/129] asix: fix setting custom MAC address on Asix 88178 devices

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------
Content-Length: 1263
Lines: 38

From: Jussi Kivilinna <jussi.kivilinna@...et.fi>

commit 71bc5d94061516c4e70303570128797bcf768b10 upstream.

In kernel v3.2 initialization sequence for Asix 88178 devices was changed so
that hardware is reseted on every time interface is brought up (ifconfig up),
instead just at USB probe time. This causes problem with setting custom MAC
address to device as ax88178_reset causes reload of MAC address from EEPROM.

This patch fixes the issue by rewriting MAC address at end of ax88178_reset.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@...et.fi>
Acked-by: Grant Grundler <grundler@...omium.org>
Cc: Allan Chou <allan@...x.com.tw>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/usb/asix.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -1316,6 +1316,13 @@ static int ax88178_reset(struct usbnet *
 	if (ret < 0)
 		return ret;

+	/* Rewrite MAC address */
+	memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);
+	ret = asix_write_cmd(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
+							data->mac_addr);
+	if (ret < 0)
+		return ret;
+
 	ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL);
 	if (ret < 0)
 		return ret;

--
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