Re: [PATCH] pata_it8213: MWDMA0 is unsupported

Jeff Garzik
2009-12-03T21:04:39Z

On 11/26/2009 12:23 PM, Sergei Shtylyov wrote:
> Bartlomiej Zolnierkiewicz wrote:
>
>>> MWDMA0 timings cannot be met with the PIIX based controller
>>> programming interface.
>
>>> This change should be safe as this is how we have been doing
>>> things in IDE it8213 host driver for years.
>
>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
>>> ---
>>> Verified with the documentation (similar case as with pata_efar).
>
>> Uhhh, no...
>
>> Too many damn drivers.
>
>> Too much damn duplication.
>
>> Too much damn subtle differences here and there.
>
>> The hardware is probably fine for MWMDA0 when it comes to
>> pata_{efar,it8213},
>> it just not documented properly in the data sheet.
>
> How so with pata_efar? The active/recovery bitfields are still 2-bit
> wide, no?

So.... pata_it8213 is fine for MWDMA0, then?

Jeff