linux-kernel - Re: [PATCH v10 06/10] PCI: Introduce generic domain handling for PCI busses.

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Message-ID: <20140908140533.GM27864@e106497-lin.cambridge.arm.com>
Date:	Mon, 8 Sep 2014 15:05:34 +0100
From:	Liviu Dudau <Liviu.Dudau@....com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, Arnd Bergmann <arnd@...db.de>,
	Rob Herring <robh+dt@...nel.org>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Will Deacon <Will.Deacon@....com>,
	Russell King <linux@....linux.org.uk>,
	linux-pci <linux-pci@...r.kernel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Tanmay Inamdar <tinamdar@....com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Sinan Kaya <okaya@...eaurora.org>,
	Jingoo Han <jg1.han@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Suravee Suthikulanit <suravee.suthikulpanit@....com>,
	linux-arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Device Tree ML <devicetree@...r.kernel.org>,
	LAKML <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v10 06/10] PCI: Introduce generic domain handling for PCI
 busses.

On Mon, Sep 08, 2014 at 03:03:21PM +0100, Catalin Marinas wrote:
> On Mon, Sep 08, 2014 at 02:54:28PM +0100, Liviu Dudau wrote:
> > The handling of PCI domains (or PCI segments in ACPI speak) is
> > usually a straightforward affair but its implementation is
> > currently left to the architectural code, with pci_domain_nr(b)
> > querying the value of the domain associated with bus b.
> > 
> > This patch introduces CONFIG_PCI_DOMAINS_GENERIC as an
> > option that can be selected if an architecture want a
> > simple implementation where the value of the domain
> > associated with a bus is stored in struct pci_bus.
> > 
> > The architectures that select CONFIG_PCI_DOMAINS_GENERIC will
> > then have to implement pci_bus_assign_domain_nr() as a way
> > of setting the domain number associated with a root bus.
> > All child busses except the root bus will inherit the domain_nr
> > value from their parent.
> > 
> > Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> > Cc: Arnd Bergmann <arnd@...db.de>
> > Signed-off-by: Catalin Marinas <Catalin.Marinas@....com>
> > [Renamed pci_set_domain_nr() to pci_bus_assign_domain_nr()]
> > Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
> 
> I'm probably the author here, but the patch log doesn't say so (I don't
> mind, just a remark).

I've took you patch initially from an email fragment, sorry, should've
altered the commiter accordingly.

Best regards,
Liviu

> 
> -- 
> Catalin

-- 
====================
| I would like to |
| fix the world,  |
| but they're not |
| giving me the   |
 \ source code!  /
  ---------------
    ¯\_(ツ)_/¯

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