Re: [PATCH net 3/3] net: lan743x: Address problems with wake option flags configuration sequences

[Andrew Lunn <andrew@lunn.ch>]

> I understand that the TI devices give the *impression* of supporting
> both, but based on what I explained above, even if you accept
> WAKE_MAGIC and WAKE_MAGICSEGURE on a set and report them both back
> as enabled on a get; whatever behavior your hardware does will not
> be fully compliant to both specs simultaneously anyway. I discussed
> this with Raju and what we decided to do for our driver/device is
> that if you pass both WAKE_MAGIC and WAKE_MAGICSEGURE flags to us we
> will report them back as both being enabled in a subsequent get as
> you suggested, but the behavior of our driver/hardware will be as if
> you had only enabled WAKE_MAGIC.

So i agree having WAKE_MAGIC and WAKE_MAGICSECURE at the same time
seems very odd. So i see no real problem limiting the driver to only
one or the other. However, if the user does ask for both, i would say
silently ignoring one is incorrect. You should return -EOPNOTUPP to
make it clear you don't support both at the same time.

I would also say that silently ignore the Secure version is probably
the worst choice. Things should be secure by default...

     Andrew