From: Bin Meng <bmeng.cn@gmail.com>
Date: Thu, 8 Oct 2015 04:45:42 +0000 (-0700)
Subject: net: eth: Clear MAC address in eth_pre_remove()
X-Git-Tag: v2016.01-rc1~154^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a16edabe7f744b2d7a97bba4d4bc95b6894fd592;p=platform%2Fkernel%2Fu-boot.git

net: eth: Clear MAC address in eth_pre_remove()

platdata->enetaddr was assigned to a value in dev_probe() last time.
If we don't clear it, for dev_probe() at the second time, dm eth
will end up treating it as a MAC address from ROM no matter where it
came from originally (maybe env, ROM, or even random). Fix this by
clearing platdata->enetaddr when removing an Ethernet device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/net/eth.c b/net/eth.c
index b978aae..c661775 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -575,8 +575,13 @@ static int eth_post_probe(struct udevice *dev)
 
 static int eth_pre_remove(struct udevice *dev)
 {
+	struct eth_pdata *pdata = dev->platdata;
+
 	eth_get_ops(dev)->stop(dev);
 
+	/* clear the MAC address */
+	memset(pdata->enetaddr, 0, 6);
+
 	return 0;
 }