linux-kernel - Re: Linux 2.6.25-rc4

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Message-Id: <20080310085539.6815693C900@tippex.mynet.homeunix.org>
Date:	Mon, 10 Mar 2008 09:55:39 +0100
From:	Anders Eriksson <aeriksson@...tmail.fm>
To:	Anders Eriksson <aeriksson@...tmail.fm>
cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Linux 2.6.25-rc4 



aeriksson@...tmail.fm said:
> torvalds@...ux-foundation.org said:
>> I think we do want the bisect run here.
>> My worry is that this is likely very timing-sensitive, so when it starts
>> failing it might not be because of the commit that actually introduces the
>> bug, but because some other timing changed, but with some luck that won't  
>> be the case.

> I'm on it. Slow machine. Household's router, 4000 versions to go... 

The bisect came up with this:

18a056feccabdfa9764016a615121b194828bc72 is first bad commit
commit 18a056feccabdfa9764016a615121b194828bc72
Author: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Date:   Sat Jan 26 20:13:12 2008 +0100

    ide: don't enable local IRQs for PIO-in in driver_cmd_intr() (take 2)

    Don't enable local IRQs for PIO-in protocol in driver_cmd_intr().

    While at it:

    * Remove redundant rq->cmd_type check.

    * Read status register after enabling local IRQs for no-data protocol.

    v2:
    * Re-add DRQ=1 check lost in v1 (noticed by Sergei).

    Acked-by: Sergei Shtylyov <sshtylyov@...mvista.com>
    Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>

:040000 040000 5fb514a261b13494c5e9c035f9e7598276ce8839 0fda2eb7d96335061741d7f54ed3e05ca34ac5b8 M      drivers


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