linux-kernel - Re: [PATCH] pata_it8213: MWDMA0 is unsupported

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Message-ID: <4B0EB986.2010801@ru.mvista.com>
Date:	Thu, 26 Nov 2009 20:23:18 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pata_it8213: MWDMA0 is unsupported

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@...il.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?

> I'll drop those two patches from my tree and take some break..

    Taking a break is good, not sure about dropping yet.

MBR, Sergei
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