RE: megaraid_sas: "FW in FAULT state!!", how to get more debug output? [BKO63661]

[Kashyap Desai <kashyap.desai@avagotech.com>]

> -----Original Message-----
> From: Jean Delvare [mailto:jdelvare@suse.de]
> Sent: Tuesday, July 07, 2015 2:14 PM
> To: Kashyap Desai
> Cc: Bjorn Helgaas; Robin H. Johnson; Adam Radford; Neela Syam Kolli;
linux-
> scsi@vger.kernel.org; arkadiusz.bubala@open-e.com; Matthew Garrett;
Sumit
> Saxena; Uday Lingala; PDL,MEGARAIDLINUX; linux-pci@vger.kernel.org;
linux-
> kernel@vger.kernel.org; Myron Stowe
> Subject: Re: megaraid_sas: "FW in FAULT state!!", how to get more debug
> output? [BKO63661]
>
> Hi Kashyap,
>
> On Thu, 28 May 2015 19:05:35 +0530, Kashyap Desai wrote:
> > Bjorn/Robin,
> >
> > Apologies for delay. Here is one quick suggestion as we have seen
> > similar issue (not exactly similar, but high probably to have same
> > issue) while controller is configured on VM as pass-through and VM
reboot
> abruptly.
> > In that particular issue, driver interact with FW which may  require
> > chip reset to bring controller to operation state.
> >
> > Relevant patch was submitted for only Older controller as it was only
> > seen for few MegaRaid controller. Below patch already try to do chip
> > reset, but only for limited controllers...I have attached one more
> > patch which does chip reset from driver load time for
> > Thunderbolt/Invader/Fury etc. (In your case you have Thunderbolt
> > controller, so attached patch is required.)
> >
> > http://www.spinics.net/lists/linux-scsi/msg67288.html
> >
> > Please post the result with attached patch.
>
> Good news! Customer tested your patch and said it fixed the problem :-)
>
> I am now in the process of backporting the patch to the SLES 11 SP3
kernel for
> further testing. I'll let you know how it goes. Thank you very much for
your
> assistance.

Thanks for confirmation. Whatever patch I submitted to you, we have added
recently (as part of common interface approach to do chip reset at load
time). We will be submitting that patch to mainline soon.

~ Kashyap
>
> --
> Jean Delvare
> SUSE L3 Support