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List:       linux-acpi
Subject:    Problem with kernel commit 664d080c41463570b95717b5ad86e79dc1be0877
From:       "Michal 'vorner' Vaner" <vorner () ucw ! cz>
Date:       2008-09-21 17:35:06
Message-ID: 20080921173506.GA15741 () tarantula ! kolej ! mff ! cuni ! cz
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Hello

Recently, I updated my kernel from 2.6.25 to latest .27 rc and found a
problem. I have a dell latitude D510 laptop with a media bay slot. If I
have any disk-like device inserted (CDRom or secondary disk) and remove
it, acpi starts generating ~250 interrupts per second (found out by
powertop) and kacpid and kacpid_notify start using all available CPU
time. It stops after any disk-like device is plugged back in, however,
inserting secondary battery does not help (which means replacing a
CDRom with a battery has the opposite than desired effect, making the
runtime shorter).

By bisecting the kernel sources, I identified it to the commit
664d080c41463570b95717b5ad86e79dc1be0877 (ACPI: Properly handle bay
devices in dock stations, from Linus's branch), which mentions you
as an author.

I would like to help to fix it, so if you need any information, I will
try to get them. Also, I have some experience in programming and trying
a development version of kernel is not a problem for me, but I did not
yet get into kernel development.

Thank you

PS: If responding to the list, please CC me, I'm not subscribed.

-- 
Michal 'vorner' Vaner
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