linux-kernel - Re: mpt fusion broken sometime since 2.6.24

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Date:	Tue, 17 Feb 2009 18:34:21 -0800 (PST)
From:	david@...g.hm
To:	Yinghai Lu <yinghai@...nel.org>
cc:	Matthew Wilcox <matthew@....cx>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-scsi@...r.kernel.org, DL-MPTFusionLinux@....com
Subject: Re: mpt fusion broken sometime since 2.6.24

On Tue, 17 Feb 2009, Yinghai Lu wrote:

> david@...g.hm wrote:
>> On Tue, 17 Feb 2009, Yinghai Lu wrote:
>>
>>> david@...g.hm wrote:
>>>> On Tue, 17 Feb 2009, Yinghai Lu wrote:
>>>>
>>>>> david@...g.hm wrote:
>>>>>> On Tue, 17 Feb 2009, Yinghai Lu wrote:
>>>>>>
>>>>>>> Subject: Re: mpt fusion broken sometime since 2.6.24
>>>>>>>
>>>>>>> On Tue, Feb 17, 2009 at 3:07 PM,  <david@...g.hm> wrote:
>>>>>>>> On Tue, 17 Feb 2009, Matthew Wilcox wrote:
>>>>>>>>
>>>>>>>>> On Tue, Feb 17, 2009 at 01:44:55PM -0800, david@...g.hm wrote:
>>>>>>>>>>
>>>>>>>>>> I got a picture of the failed boot at
>>>>>>>>>> http://linux.lang.hm/linux/IMG00052.jpg
>>>>>>>>>
>>>>>>>>> The PCI-MSI line is probably indicative.  Can you try booting with:
>>>>>>>>>
>>>>>>>>> mptbase.mpt_msi_enable_sas=0
>>>>>>>>>
>>>>>>>>> and also send us an lspci -v so we can update the blacklist?
>>>>>>>>
>>>>>>>> is that disabling SAS for this system? if so, that's the wrong thing
>>>>>>>> to do
>>>>>>>> (the drives are SAS)
>>>>>>>>
>>>>>>> it only disable MSI with that mptsas.
>>>>>>> and mptsas will use ioapic routing.
>>>>>>>
>>>>>>> can you post whole bootlog?
>>>>>>
>>>>>> unfortunantly it's booting from CD and the only drives in the
>>>>>> system are
>>>>>> the ones that are not being accessed.
>>>>>
>>>>> i mean with kernel before 2.6.24..
>>>>
>>>> Ok, attached.
>>>>
>>>
>>> so your lsi 1068 is under 8132... need to double check if that chip
>>> really support MSI.
<SNIP>

I don't understand the section I snipped from the message above

> do you have chance to try current tip/master
> http://people.redhat.com/mingo/tip.git/readme.txt
> or 2.6.29-rcX
> plus following patch?

I will see about trying this.

> or can you check if there is update fw for your LSI card?

this is more work, I'll look into that as well.

David Lang

> [PATCH] mpt: fix enable lsi sas to use msi as default
>
> Impact: fix bug
>
> the third param in module_param(,,) is perm instead of default value.
> we still need to assign default at first.
>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
>
> ---
> drivers/message/fusion/mptbase.c |    4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> Index: linux-2.6/drivers/message/fusion/mptbase.c
> ===================================================================
> --- linux-2.6.orig/drivers/message/fusion/mptbase.c
> +++ linux-2.6/drivers/message/fusion/mptbase.c
> @@ -90,8 +90,8 @@ module_param(mpt_msi_enable_fc, int, 0);
> MODULE_PARM_DESC(mpt_msi_enable_fc, " Enable MSI Support for FC \
> 		controllers (default=0)");
>
> -static int mpt_msi_enable_sas;
> -module_param(mpt_msi_enable_sas, int, 1);
> +static int mpt_msi_enable_sas = 1;
> +module_param(mpt_msi_enable_sas, int, 0);
> MODULE_PARM_DESC(mpt_msi_enable_sas, " Enable MSI Support for SAS \
> 		controllers (default=1)");
>
>
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