Re: Linux 2.4.21-pre3-ac4

[Benjamin Herrenschmidt]

On Mon, 2003-01-13 at 20:46, Alan Cox wrote:
> > host shall wait 400 ns before reading the Status register. When entering 
> > this state from the HPIOI2 state, the host shall wait one PIO transfer 
> > cycle time before reading the Status register. The wait may be 
> > accomplished by reading the Alternate Status register and ignoring the 
> > result.
> 
> Fatal on PIIX PIO

Ok, but PIIX runs on intel platforms with real IOs, so there is no need
to perform a read... If we go the hwif->IOSYNC() way, we might well set
it up to no-op on x86 PIO iops by default and read of alt-status on
other archs if it's safe enough on other controllers/drives...

Ben.