[PATCH 1/2] net phy: Add support for finding a mdio bus by its name

[Sascha Hauer]

On Thu, Feb 07, 2013 at 01:02:06PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 12:09 Thu 07 Feb     , Sascha Hauer wrote:
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > ---
> >  drivers/net/phy/mdio_bus.c |   19 +++++++++++++++++++
> >  include/linux/phy.h        |    3 +++
> >  2 files changed, 22 insertions(+)
> > 
> > diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
> > index d1d802b..3c4be1c 100644
> > --- a/drivers/net/phy/mdio_bus.c
> > +++ b/drivers/net/phy/mdio_bus.c
> > @@ -25,6 +25,8 @@
> >  #include <linux/phy.h>
> >  #include <linux/err.h>
> >  
> > +static LIST_HEAD(mii_bus_list);
> > +
> >  /**
> >   * mdiobus_register - bring up all the PHYs on a given bus and attach them to bus
> >   * @bus: target mii_bus
> > @@ -57,6 +59,8 @@ int mdiobus_register(struct mii_bus *bus)
> >  	if (bus->reset)
> >  		bus->reset(bus);
> >  
> > +	list_add_tail(&bus->list, &mii_bus_list);
> > +
> >  	pr_info("%s: probed\n", dev_name(&bus->dev));
> >  	return 0;
> >  }
> > @@ -71,9 +75,24 @@ void mdiobus_unregister(struct mii_bus *bus)
> >  			unregister_device(&bus->phy_map[i]->dev);
> >  		bus->phy_map[i] = NULL;
> >  	}
> > +
> > +	list_del(&bus->list);
> >  }
> >  EXPORT_SYMBOL(mdiobus_unregister);
> >  
> > +struct mii_bus *mdiobus_find(const char *name)
> > +{
> > +	struct mii_bus *bus;
> > +
> > +	list_for_each_entry(bus, &mii_bus_list, list) {
> 	no use bus_for_each

That was my first try until I realized that not the mdio buses are
registered on the mdio_bus_type, but instead the phy devices.

Sascha

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