linux-kernel - Re: [BISECTED] pata_jmicron: no drives found on post 2.6.25 kernels

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Date:	Tue, 20 May 2008 19:09:19 +0300
From:	Plamen Petrov <pvp-lsts@...ru.acad.bg>
To:	Shaohua Li <shaohua.li@...el.com>
Cc:	linux-kernel@...r.kernel.org, Luca Tettamanti <kronos.it@...il.com>
Subject: Re: [BISECTED] pata_jmicron: no drives found on post 2.6.25
  kernels

Shaohua Li написа: 

> On Tue, 2008-05-20 at 01:37 +0300, Plamen Petrov wrote:
>> Hello, folks!  
>> 
>> After 2.6.26 merge window opened, the optical drives in my
>> computer, hanging off a JMicron controler were not detected
>> by linux any more.  
>> 
>> Luca Tettamanti reported similar troubles:
>> http://marc.info/?l=linux-kernel&m=120958791323911&w=2  
>> 
>> Its been 20 days, so I decided to bisect.
>> git bisect revealed that commit
>> 7d715a6c1ae5785d00fb9a876b5abdfc43abc44b
>> is the one causing pata_jmicron to fail to detect drives,
>> connected to the JMicron controler on my motherboard.
>> At least in my case, anyway...
>> Changing kernel config to CONFIG_PCIEASPM=n makes the drives
>> attached to the JMicron SATA/PATA controller usable again. 
> When you enable this option, did you change any ASPM policy? By default,
> we are using the BIOS setting, so it shouldn't change any thing. 
> 

No, I did not change any ASPM policy, mainly because I do not how. 

> Also can you please send me the 'lspci -vvvxxxx' output with/without the
> ASPM enabled? 
> 

Checkout the attached files. Sorry for the delay - I was away from the
machine in question. 

> Thanks,
> Shaohua 
> 

Thanks for your time,
Plamen 

-- 
Plamen Petrov, network & system administrator
Filial - Silistra
RU "Angel Kantchev"
http://fs.ru.acad.bg/
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Download attachment "PCIEASPM_DISABLED_lspci.txt.bz2" of type "application/octet-stream" (6596 bytes)

Download attachment "PCIEASPM_ENABLED_lspci.txt.bz2" of type "application/octet-stream" (6591 bytes)