From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 1/5] megaraid_sas: switch to pci_alloc_irq_vectors
Date: Mon, 14 Nov 2016 13:33:04 +0100
Message-ID: <20161114123304.GB14653@lst.de>
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To: Hannes Reinecke <hare@suse.de>
Cc: Sumit Saxena <sumit.saxena@broadcom.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, Christoph Hellwig <hch@lst.de>, James Bottomley <james.bottomley@hansenpartnership.com>, linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.com>

On Fri, Nov 11, 2016 at 03:59:05PM +0100, Hannes Reinecke wrote:
> You are right; irq affinity only makes sense for MSI-X.
> I'll be fixing it up.

It works for multi-MSI and MSI-X.  And even for single-MSI or
INTx it's harmless as it will be ignored if only a single
vector is present.