linux-kernel - Re: 2.6.29-rc2: thinkpad dock -- cdrom vs. s2ram

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Message-Id: <200901202145.41923.rjw@sisk.pl>
Date:	Tue, 20 Jan 2009 21:45:41 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	Pavel Machek <pavel@...e.cz>,
	kernel list <linux-kernel@...r.kernel.org>, teheo@...ell.com,
	trenn@...e.de, Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-ide@...r.kernel.org
Subject: Re: 2.6.29-rc2: thinkpad dock -- cdrom vs. s2ram

On Tuesday 20 January 2009, Sergei Shtylyov wrote:
> Hello.
> 
> Rafael J. Wysocki wrote:
> 
> >>>> In 2.6.29 (and probably earlier) kernels, booting in docking station
> >>>> results in undocked s2ram failing.
> >>>>
> >>>> Problem seems to be that hda (cdrom in dock) is not deregistered
> >>>> during undock, and that hda driver loops spitting error messages at
> >>>> 'too-fast-to-read' rate when suspend with missing hda is attempted.
> >>>>         
> >>> What driver do you mean exactly?  Old-IDE I would guess.
> >>>
> >>> Does this also happen with a PATA/libata driver?
> >>>       
> >> I guess I'm confused. I tried:
> >>
> >> --- config.ok	2009-01-19 11:40:42.000000000 +0100
> >> +++ ../b-linux/.config	2009-01-19 22:45:03.000000000 +0100
> >> @@ -1022,7 +1022,7 @@
> >>  # CONFIG_SATA_SIL24 is not set
> >>  CONFIG_ATA_SFF=y
> >>  CONFIG_SATA_SVW=y
> >> -CONFIG_ATA_PIIX=y
> >> +# CONFIG_ATA_PIIX is not set
> >>  # CONFIG_SATA_MV is not set
> >>  # CONFIG_SATA_NV is not set
> >>  # CONFIG_PDC_ADMA is not set
> >> @@ -1058,8 +1058,8 @@
> >>  # CONFIG_PATA_JMICRON is not set
> >>  # CONFIG_PATA_TRIFLEX is not set
> >>  # CONFIG_PATA_MARVELL is not set
> >> -# CONFIG_PATA_MPIIX is not set
> >> -# CONFIG_PATA_OLDPIIX is not set
> >> +CONFIG_PATA_MPIIX=y
> >> +CONFIG_PATA_OLDPIIX=y
> >>  # CONFIG_PATA_NETCELL is not set
> >>  # CONFIG_PATA_NINJA32 is not set
> >>  # CONFIG_PATA_NS87410 is not set
> >>
> >> ...but cdrom is still detected as hda.
> >>     
> >
> > Er, CONFIG_ATA_PIIX is a SATA driver.
> 
>    Not really, it drives both SATA and PATA controllers.

What I wanted to say it's not old-IDE.

Thanks,
Rafael
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