linux-kernel - RE: [PATCH v3 4/7] PCI: Record an fwnode associated with root PCI buses, optionally

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Date:	Tue, 27 Oct 2015 17:19:48 +0000
From:	Jake Oshins <jakeo@...rosoft.com>
To:	Jiang Liu <jiang.liu@...ux.intel.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	KY Srinivasan <kys@...rosoft.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"vkuznets@...hat.com" <vkuznets@...hat.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	"marc.zyngier@....com" <marc.zyngier@....com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: RE: [PATCH v3 4/7] PCI: Record an fwnode associated with root PCI
 buses, optionally

> -----Original Message-----
> From: Jiang Liu [mailto:jiang.liu@...ux.intel.com]
> Sent: Tuesday, October 27, 2015 12:10 AM
> To: Jake Oshins <jakeo@...rosoft.com>; gregkh@...uxfoundation.org; KY
> Srinivasan <kys@...rosoft.com>; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; olaf@...fle.de; apw@...onical.com;
> vkuznets@...hat.com; tglx@...utronix.de; Haiyang Zhang
> <haiyangz@...rosoft.com>; marc.zyngier@....com;
> bhelgaas@...gle.com; linux-pci@...r.kernel.org
> Subject: Re: [PATCH v3 4/7] PCI: Record an fwnode associated with root PCI
> buses, optionally
> 
> On 2015/10/27 7:15, jakeo@...rosoft.com wrote:
> > From: Jake Oshins <jakeo@...rosoft.com>
> >
> > This patch allows a PCI front-end implementation to supply an
> fwnode_handle
> > associated with a root PCI bus, optionally.  If supplied, the PCI driver
> > records this.
> >
> > This patch supports the next patch in the series, which looks up an IRQ
> domain
> > through this handle.
> Hi JaKeo,
> 	Instead of changing the pci_create_root_bus() interface,
> how about packing fwnode into sysdata, then we may
> either 1) introduce a helper to retrieve fwnode from sysdata
> or 2) set host_bridge->fwnode = sysdata in function
> pcibios_root_bridge_prepare.
> 
> Thanks,
> Gerry
> 

Thanks for the review.  I'll work up a version that uses this suggestion and resend.  (I'll respond to your feedback on the other patches, too.)

-- Jake Oshins

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