On Fri, 2008-03-28 at 14:48 -0700, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
>
> It appears that the LSI SAS 1064E chip needs to be reset after a
> suspend/resume cycle before the driver attempts further communications with
> the chip. Without this patch, resuming the chip results in this error
> message being printed repeatedly and no more disk I/O.
>
> mptbase: ioc0: ERROR - Invalid IOC facts reply, msgLength=0 offsetof=6!
>
> So far it seems to fix suspend/resume on all the MPT Fusion cards I have
> (SAS and U320 SCSI) but since I don't know the internals of that chip I
> can't say for sure if this is a proper fix.
After a huge amount of wrangling, a fix for this which everyone agreed
to is upstream here:
commit 4d4109d0eb6930e59942d019980b83af679f187b
Author: Prakash, Sathya <sathya.prakash@xxxxxxx>
Date: Fri Mar 7 16:19:50 2008 +0530
[SCSI] mpt fusion: Power Management fixes for MPT SAS PCI-E controllers
James
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