From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH v2 5/6] AHCI: Check MRSM bit when multiple MSIs enabled Date: Thu, 5 Sep 2013 09:11:49 -0400 Message-ID: <20130905131149.GC26314@htj.dyndns.org> References: <4bc31d6ccf3f84399b977fe8ed4fe77aadfa1c79.1378383792.git.agordeev@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <4bc31d6ccf3f84399b977fe8ed4fe77aadfa1c79.1378383792.git.agordeev@redhat.com> Sender: linux-pci-owner@vger.kernel.org To: Alexander Gordeev Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-pci@vger.kernel.org, linux-ide@vger.kernel.org, Ingo Molnar , Joerg Roedel , Jan Beulich , Bjorn Helgaas List-Id: linux-ide@vger.kernel.org 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 Acked-by: Tejun Heo The patch should probably be re-sequenced to the head of the series and cc stable@vger.kernel.org. Not checking MRSM is scary. Thanks. -- tejun