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Date: Thu, 4 Aug 2005 13:25:16 -0700
From: Andrew Morton <akpm@osdl.org>
To: Alexander Fieroch <Fieroch@web.de>
Cc: jesper.juhl@gmail.com, alan@lxorguk.ukuu.org.uk, bzolnier@gmail.com,
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       Natalie.Protasevich@UNISYS.com
Subject: Re: [2.6.12rc4] PROBLEM: "drive appears confused" and "irq 18:
 nobody cared!"
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Alexander Fieroch <Fieroch@web.de> wrote:
>
> The problem still occurs in kernel 2.6.12-mm2.
> 
> Now there are two modules for IT8212 in the kernel: 
> CONFIG_BLK_DEV_IT821X and CONFIG_SCSI_ITERAID
> 
> Running the mm2 kernel with "ITE IT8212 RAID CARD support" enabled and 
> compiled into the kernel I get a kernel panic:
> 
> VFS: Cannot open root device "sda3" or unknown-block(8,3)
> Please append a correct "root=" boot option
> Kernel panic - not syncing: VFS: Unable to mount root fs on 
> unknown-block(8,3)
> 
> sda3 is a SATA drive with the root partition and linux is booting 
> without CONFIG_SCSI_ITERAID enabled in the kernel. Is there a conflict 
> with the sata driver?
> 

I dropped iteraid.patch

> Having compiled "IT821X IDE support" into the kernel but not "ITE IT8212 
> RAID CARD support" the errors still occur. The complete syslog with 
> kernel options pci=routeirq and apic=debug is attached.

OK, that's the driver which Alan played with.  I don't expect we'll be able
to get all this fixed up for 2.6.13.

Please check 2.6.13-rc6 when it's out - this might fix the IRQ problem.  If
any bugs remain, please raise entries for them at bugzilla.kernel.org,
thanks.