From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH] ahci: always fall back to single-MSI mode Date: Mon, 21 Nov 2016 11:08:08 -0500 Message-ID: <20161121160808.GA20883@htj.duckdns.org> References: <1479474546-4413-1-git-send-email-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-yw0-f196.google.com ([209.85.161.196]:36348 "EHLO mail-yw0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754190AbcKUQIK (ORCPT ); Mon, 21 Nov 2016 11:08:10 -0500 Received: by mail-yw0-f196.google.com with SMTP id r204so28098553ywb.3 for ; Mon, 21 Nov 2016 08:08:10 -0800 (PST) Content-Disposition: inline In-Reply-To: <1479474546-4413-1-git-send-email-hch@lst.de> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Christoph Hellwig Cc: michael@michaelmarley.com, linux-ide@vger.kernel.org On Fri, Nov 18, 2016 at 02:09:06PM +0100, Christoph Hellwig wrote: > Don't try to guess what the errors from pci_irq_alloc_vectors mean, as > that's too fragile. Instead always try allocating a single vector > when multi-MSI mode fails. This makes various intel Desktop and > Laptop CPUs use MSI again. > > Signed-off-by: Christoph Hellwig > Reported-by: Michael Marley > Tested-by: Michael Marley > Fixes: 0b9e2988ab22 ("ahci: use pci_alloc_irq_vectors") Applied to libata/for-4.9-fixes. Thanks. -- tejun