linux-kernel - Re: mpt fusion driver crashes with LSI22320SE installed and BIOS ACPI turned off

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Date:	Wed, 18 Feb 2009 21:32:08 -0600
From:	Robert Hancock <hancockrwd@...il.com>
To:	Maurice Volaski <mvolaski@...om.yu.edu>
CC:	Eric.Moore@....com, linux-kernel@...r.kernel.org
Subject: Re: mpt fusion driver crashes with LSI22320SE installed and BIOS
 ACPI   turned off

Maurice Volaski wrote:
> I emailed about this earlier and here's some new info: the crash occurs 
> when ACPI is turned off. It appears that your driver is expecting 
> information from ACPI and if it doesn't get it, it will crash. (This has 
> been posted as bug http://bugzilla.kernel.org/show_bug.cgi?id=12733)
> 
> On a system with a Supermicro X7DWN+ with ACPI turned off, and an 
> LSI22320SE card installed, the mptdriver will crash. Here is the 
> relevant log:

This could very easily be a motherboard bug. Many newer motherboards are 
NOT tested properly with ACPI disabled. Your case could easily be due to 
the board's interrupt routing for certain slots/devices being messed up 
when ACPI is not in use. For this reason it's generally not a good idea 
to try to disable ACPI these days.
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