linux-kernel - Re: [PATCH v2 5/6] AHCI: Check MRSM bit when multiple MSIs enabled

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Message-ID: <20130905131149.GC26314@htj.dyndns.org>
Date:	Thu, 5 Sep 2013 09:11:49 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-pci@...r.kernel.org, linux-ide@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>, Joerg Roedel <joro@...tes.org>,
	Jan Beulich <JBeulich@...e.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v2 5/6] AHCI: Check MRSM bit when multiple MSIs enabled

On Thu, Sep 05, 2013 at 02:54:17PM +0200, Alexander Gordeev wrote:
> Do not trust the hardware and always check if MSI
> Revert to Single Message mode was enforced. Fall
> back to the single MSI mode in case it did. Not
> doing so might screw up the interrupt handling.
> 
> Signed-off-by: Alexander Gordeev <agordeev@...hat.com>

 Acked-by: Tejun Heo <tj@...nel.org>

The patch should probably be re-sequenced to the head of the series
and cc stable@...r.kernel.org.  Not checking MRSM is scary.

Thanks.

-- 
tejun
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