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net: eth: Clear MAC address in eth_pre_remove()

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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>
This commit is contained in:
Bin Meng 2015-10-07 21:45:42 -07:00 • committed by Joe Hershberger
parent 50dae85c71
commit a16edabe7f
1 changed files with 5 additions and 0 deletions
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5
net/eth.c
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@ -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;
}