linux-kernel - Re: swsusp regression [Was: 2.6.18-rc3-mm2]

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Date:	Tue, 8 Aug 2006 12:43:04 +0200
From:	Jens Axboe <axboe@...e.de>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Jason Lunz <lunz@...ennom.net>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	andre@...ux-ide.org, pavel@...e.cz, linux-pm@...l.org,
	linux-ide@...r.kernel.org
Subject: Re: swsusp regression [Was: 2.6.18-rc3-mm2]

On Tue, Aug 08 2006, Jiri Slaby wrote:
> Jens Axboe wrote:
> >On Mon, Aug 07 2006, Rafael J. Wysocki wrote:
> >>On Monday 07 August 2006 18:23, Jason Lunz wrote:
> >>>In gmane.linux.kernel, you wrote:
> >>>>>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc3/2.6.18-rc3-mm2/
> >>>>I tried it and guess what :)... swsusp doesn't work :@.
> >>>>
> >>>>This time I was able to dump process states with sysrq-t:
> >>>>http://www.fi.muni.cz/~xslaby/sklad/ide2.gif
> >>>>
> >>>>My guess is ide2/2.0 dies (hpt370 driver), since last thing kernel 
> >>>>prints is suspending device 2.0
> >>>Does it go away if you revert this?
> >>>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc3/2.6.18-rc3-mm2/broken-out/ide-reprogram-disk-pio-timings-on-resume.patch
> >>>
> >>>That should only affect resume, not suspend, but it does mess around
> >>>with ide power management. Is this maybe happening on the *second*
> >>>suspend?
> >>>
> >>>>-hdc: ATAPI 63X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
> >>>>+hdc: ATAPI CD-ROM drive, 0kB Cache, UDMA(33)
> >>>This looks suspicious. -mm does have several ide-fix-hpt3xx patches.
> >>I found that git-block.patch broke the suspend for me.  Still have no idea
> >>what's up with it.
> >
> >Can you apply this on top of -mm and see if that fixes it?
> 
> It doesn't solve the problem for me.

Ok, thanks for testing, I'll try and reproduce it here.

-- 
Jens Axboe

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