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Date: Thu, 6 Mar 2014 22:43:57 +0100
From: Alexander Gordeev <agordeev@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Vinod Koul <vinod.koul@intel.com>,
	"dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
	linux-pci@vger.kernel.org
Subject: Re: [PATCH v2 RESEND 1/4] ioat: Use pci_enable_msix_exact() instead
 of pci_enable_msix()
Message-ID: <20140306214356.GA16376@dhcp-26-207.brq.redhat.com>
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On Thu, Mar 06, 2014 at 01:09:39PM -0800, Dan Williams wrote:
> Can you point me to the background for this change.  From the
> changelog I have no idea what this patch does or why I need to apply
> it.

Function pci_enable_msix() returns a tri-state value while
pci_enable_msi_exact() is a canonical zero/-errno variant.
The former is being phased out in favor of the latter.
In case of 'ioat' there (should be) no difference.

HTH.

-- 
Regards,
Alexander Gordeev
agordeev@redhat.com