ep93xx SPI driver v3

[Mika Westerberg]

On Mon, Apr 19, 2010 at 10:25:03AM +0100, Martin Guy wrote:
> On 4/19/10, Mika Westerberg <mika.westerberg at iki.fi> wrote:
> >  BTW: do you guys think that there is any real use of polling mode
> >  in the driver or should I drop it out completely?
> 
> Is there any advantage to it in terms of transfer speed or CPU efficiency?

I guess no. At least for CPU efficiency.

Original motivation for implementing it was to let users choose which method they prefer
but now I have second thoughts about that since interrupt mode seems to perform OK and
I don't see any advantage of using polling here.

Thanks,
MW