[PATCH 3/4] Simplify rtas_change_msi() error semantics

[Benjamin Herrenschmidt]

On Tue, 2007-10-02 at 17:40 +1000, Michael Ellerman wrote:
> 
> rtas_disable_msi() asks firmware to configure 0 MSIs on the device,
> that
> hopefully succeeds. AFAIK configuring 0 MSIs is as close as we can get
> to disabling MSI via RTAS.
> 
> Perhaps that should also (re)enable INTX?

Not sure... maybe. RTAS doesn't do it ? Then there,s the question of
what happens on machines that don't support INTx ...

Cheers.
Ben.