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

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Message-ID: <49759D0E.804@ru.mvista.com>
Date:	Tue, 20 Jan 2009 12:44:46 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
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

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.

MBR, Sergei


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