[PATCH 03/10] net/fec: add mac field into platform data and consolidate fec_get_mac
Shawn Guo
shawn.guo at freescale.com
Wed Dec 29 23:29:00 EST 2010
Hi Baruch,
On Wed, Dec 29, 2010 at 06:05:20PM +0800, Shawn Guo wrote:
> 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.
>
I just thought this over again. Module parameter might not be
the best here. fec is usually used to mount nfs during boot,
which requires a built-in driver other than module.
--
Regards,
Shawn
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