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

Hello Shawn,

On Wed, Dec 29, 2010 at 06:05:21PM +0800, Shawn Guo wrote:

On Wed, Dec 29, 2010 at 08:53:30AM +0200, Baruch Siach wrote:

quoted

Hi Shawn,
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 */

default MAC address means the address passed via cmdline?  Sounds
confusing to me.

	if (iap == fec_mac_default)
		dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->pdev->id;

Can this overflow?  (I didn't check the code, so my concern might be
completely stupid here.)

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-K?nig            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |