On Wed, Dec 09, 2020 at 11:29:59AM +0100, Uwe Kleine-König wrote:
> For some mii transfers the MII bit in the event register is already set
> before a read or write transfer is started. This breaks evaluating the
> transfer's result because it is checked too early.
>
> Before MII transfers were switched from irq to polling this was not an
> issue because then it just resulted in an irq which completed the
> mdio_done completion. This completion however was reset before each
> transfer and so the event didn't hurt.
>
> This fixes NFS booting on an i.MX25 based machine.
>
> Fixes: f166f890c8f0 ("net: ethernet: fec: Replace interrupt driven MDIO with
> polled IO")
> Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
> ---
> Hello,
>
> I tried (shortly) to find out what actually results in this bit being
> set because looking at f166f890c8f0 I'd say it cares enough. It's just
> proven by the real world that it's not good enough :-)
>
> Best regards
> Uwe
Hi Uwe
Humm. This should of been fixed already. Has a patch been dropped?
Let me go look at the history.
Andrew
