Re: [PATCH v2 00/29] at24: remove at24_platform_data

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On Thu, Oct 4, 2018 at 4:36 PM Sowmini Varadhan
<sowmini.varadhan@xxxxxxxxxx> wrote:
>
> Just catching up on this thread, so please excuse any unintentional
> misquotes here.
>
> > > > > David: I couldn't find a place in sparc code where any ethernet device
> > > > > would be registered, so is there a chance that nobody is using it?
> > > >
> > > > SPARC uses a true Open Firmware implementation, so it would register
> > > > drivers through the CONFIG_OF infrastructure.
>
> correct
>
> > The calls are not even that old, and clearly added intentionally for sparc,
> > see commit ba94272d08a7 ("i40e: use eth_platform_get_mac_address()")
> > which added the first one.
>
> Yes, correct again. Wouldn't PPC also end up doing the same thing?
>
> See also commit c762dff24c06 (for ixgbe) - without this fix sparc systems
> will come up with a bogus mac address and then you end up having to
> manually fix this in ugly ways.

The of_get_mac_address() portion is not controversial at all I think,
the question was whether we need the fallback to
arch_get_platform_mac_address() in any of the drivers that
call eth_platform_get_mac_address().

      Arnd



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