From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH RFC 05/77] PCI/MSI: Convert pci_msix_table_size() to a
 public interface
Date: Mon, 7 Oct 2013 14:10:43 -0400
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Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
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To: Alexander Gordeev <agordeev-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
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Hello,

On Wed, Oct 02, 2013 at 12:48:21PM +0200, Alexander Gordeev wrote:
> Make pci_msix_table_size() to return a error code if the device
> does not support MSI-X. This update is needed to facilitate a
> forthcoming re-design MSI/MSI-X interrupts enabling pattern.
> 
> Device drivers will use this interface to obtain maximum number
> of MSI-X interrupts the device supports and use that value in
> the following call to pci_enable_msix() interface.
> 
> Signed-off-by: Alexander Gordeev <agordeev-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

Hmmm... I probably missed something but why is this necessary?  To
discern between -EINVAL and -ENOSPC?  If so, does that really matter?

Thanks.

-- 
tejun
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