linux-kernel - Re: [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi

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Message-ID: <20130905154041.GD30984@dhcp-26-207.brq.redhat.com>
Date:	Thu, 5 Sep 2013 17:40:42 +0200
From:	Alexander Gordeev <agordeev@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-pci@...r.kernel.org, linux-ide@...r.kernel.org,
	Ingo Molnar <mingo@...nel.org>, Joerg Roedel <joro@...tes.org>,
	Jan Beulich <JBeulich@...e.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface

On Thu, Sep 05, 2013 at 11:04:42AM -0400, Tejun Heo wrote:
> The thing is, do we even have cases where arch code returns positive
> return to indicate possible partial allocation?  If not, the whole
> interface is convoluted for no good reason and we can just make
> everything return 0 or -errno, which is a lot simpler.  No?

As I mentioned in my other note, at least PPC has a concept of MSI quota,
so exceeding it would be the very case, I believe.

> Thanks.
> 
> -- 
> tejun

-- 
Regards,
Alexander Gordeev
agordeev@...hat.com
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