linux-kernel - Re: 2.6.31-rc9 kernel BUG and mvsas

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Date:	Sat, 5 Dec 2009 11:54:21 +0100 (CET)
From:	Mikael Abrahamsson <swmike@....pp.se>
To:	Kristleifur Daðason <kristleifur@...il.com>
cc:	linux-kernel@...r.kernel.org,
	linux-scsi <linux-scsi@...r.kernel.org>,
	Linux IDE mailing list <linux-ide@...r.kernel.org>
Subject: Re: 2.6.31-rc9 kernel BUG and mvsas

On Fri, 4 Dec 2009, Kristleifur Daðason wrote:

> Cheers for trying them out! For the record, I think they were made
> against 2.6.31, perhaps the original 2.6.31 rather than later 2.6.31.x
> releases.

It doesn't apply cleanly against vanilla 2.6.31, it does however apply 
cleanly against vanilla 2.6.32, but with the following compile error:

drivers/scsi/mvsas/mv_sas.c: In function âmvs_slave_configureâ:
drivers/scsi/mvsas/mv_sas.c:417: error: âSCSI_QDEPTH_DEFAULTâ undeclared 
(first use in this function)
drivers/scsi/mvsas/mv_sas.c:417: error: (Each undeclared identifier is 
reported only once
drivers/scsi/mvsas/mv_sas.c:417: error: for each function it appears in.)
drivers/scsi/mvsas/mv_sas.c:417: error: too many arguments to function 
âsas_change_queue_depthâ
make[4]: *** [drivers/scsi/mvsas/mv_sas.o] Error 1

When removing this extra option, it compiles with vanilla 2.6.32 just 
fine. I crashes the same way as the ubuntu kernel when hot-plugging a disk 
as well (this time I did it without gdm/x running and it oopses, but 
unfortunately the highest part of the oops scrolled off). It's 100% 
reproducible anyway, so basically the controller is a no-go in 2.6.31.6 
and 2.6.32 both vanilla and ubuntu versions, both without and including 
the nov09 mvsas patch (at least the original version of the patch as 
posted). Different failure scenarios though... With the stock kernel the 
controller seems to get stuck in writing and nothing more happens but at 
least the machine doesn't crash and burn like it does with the 
mvsas-patch.

-- 
Mikael Abrahamsson    email: swmike@....pp.se