[PATCH 03/10] net/fec: add mac field into platform data and consolidate fec_get_mac

[Shawn Guo]

Hi Baruch,

On Wed, Dec 29, 2010 at 08:53:30AM +0200, Baruch Siach wrote:
> Hi Shawn,
> 
> Please add netdev at vger.kernel.org to the Cc of all your fec driver patches.
> 
> On Tue, Dec 28, 2010 at 10:55:48PM +0800, Shawn Guo wrote:
> > Add mac field into fec_platform_data and consolidate function
> > fec_get_mac to get mac address in following order.
> > 
> >  1) kernel command line fec_mac=xx:xx:xx...
> 
> In the case of dual MAC that you later add support for, the address which one 
> is being set? Is there a way to set both in kernel command line?
> 
The fec0 gets fec_mac and fec1 gets fec_mac + 1. The following code
in function fec_get_mac takes care of it.

	/* Adjust MAC if using default MAC address */
	if (iap == fec_mac_default)
		dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->pdev->id;


> Also, instead of inventing another kernel command line parameter, it is better 
> IMO to use the module parameters mechanism. The greth NIC driver already uses 
> this method for setting MAC address. Look for 'macaddr' in 
> drivers/net/greth.c, and the explanation at the beginning of 
> Documentation/kernel-parameters.txt.
> 
Sounds good. Thanks.

[...]

> > +	/*
> > +	 * try to get mac address in following order:
> > +	 *
> > +	 * 1) kernel command line fec_mac=xx:xx:xx...
> > +	 */
> > +	iap = fec_mac_default;
> > +
> > +	/*
> > +	 * 2) from flash or fuse (via platform data)
> > +	 */
> 
> Again, how do you handle the dual MAC case?
> 
See above, please.

[...]

> > @@ -1,6 +1,7 @@
> >  /* include/linux/fec.h
> >   *
> >   * Copyright (c) 2009 Orex Computed Radiography
> > + * Copyright (C) 2010 Freescale Semiconductor, Inc.
> >   *   Baruch Siach <baruch at tkos.co.il>
> 
> This breaks the original copyright notice. Please move the Freescale copyright 
> notice below the original one.
> 
Sorry. Will fix it.

-- 
Regards,
Shawn