Re: [PATCH] MACB: Set PHY address in kernel parameters

From: Anders Darander
Date: Wed Mar 31 2010 - 06:11:38 EST


* Jiri Pirko <jpirko@xxxxxxxxxx> [100331 12:03]:
> Wed, Mar 31, 2010 at 09:51:42AM CEST, anders.darander@xxxxxxxxx wrote:
> >
> >- phydev = phy_find_first(bp->mii_bus);
> >+ if (phy_addr >= PHY_MAX_ADDRESS)
> >+ phydev = phy_find_first(bp->mii_bus);
> >+ else
> >+ phydev = bp->mii_bus->phy_map[phy_addr];
> >+
> > if (!phydev) {
> > printk (KERN_ERR "%s: no PHY found\n", dev->name);
> > return -1;
>
> This is really ugly :( Should be done differently, more general. I've been
> thinking about this for a while. Maybe the solution is to integrate the switch
> into DSA subsystem. See net/dsa. Not sure though...

A more general solution is always welcome...

However, although I've not tested it, I think that Marc Kleine-Budde
came up with the correct solution. That was using phy_mask, and set it
up in the *eth_data structure in the board setup code.

Thus, it seems that the needed functionality is readily available.
(Working in the embedded field, I've no problem with defining HW-related
things in the board setup code, as opposite of having it dynamically
defined).

Regards,
Anders

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