Re: [PATCH 2/2] Revert "Revert "ide: try to use PIO Mode 0 duringprobe if possible""

[David Miller]

From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Date: Wed, 7 Oct 2009 00:52:37 +0200

> On Wednesday 07 October 2009 00:41:20 David Miller wrote:
>> From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
>> Date: Wed, 7 Oct 2009 00:27:45 +0200
>> 
>> > The root cause of reported system hangs was (now fixed) sis5513 bug
>> > and not "ide: try to use PIO Mode 0 during probe if possible" change
>> > (commit 6029336426a2b43e4bc6f4a84be8789a047d139e) so the revert was
>> > incorrect (it simply replaced one regression with the other one).
>> 
>> What is this older "regression" fixed by the PIO-0 change?
>> 
>> You're not explaining it and neither does the commit message for the
>> PIO-0 change.
> 
> It does:
> 
> | Subject: [PATCH] sis5513: fix PIO setup for ATAPI devices

Sorry, I wasn't clear.

I'm talking about commit 6029336426a2b43e4bc6f4a84be8789a047d139e, it
doesn't say why we want to try PIO 0 mode during probe.

What was the regression fixed by that change?

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