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

From: Plamen Petrov
Date: Tue May 20 2008 - 12:09:32 EST

Shaohua Li ÐÐÐÐÑÐ:

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:

Its been 20 days, so I decided to bisect.
git bisect revealed that commit
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 for your time,

Plamen Petrov, network & system administrator
Filial - Silistra
RU "Angel Kantchev"
this message is UTF8 encoded

This message was sent by the mail server
at using the web interface:
E-mail postmaster@xxxxxxxxxxxxx with anything,
regarding the server itself

Attachment: PCIEASPM_DISABLED_lspci.txt.bz2
Description: Binary data

Attachment: PCIEASPM_ENABLED_lspci.txt.bz2
Description: Binary data