linux-kernel - Re: [PATCH v8 10/30] PCI: Introduce pci_host_bridge

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Message-ID: <CAE9FiQVgXfViM22qhB-sKDSTtnhvLDMk0NTiK_G88UogVMuM_w@mail.gmail.com>
Date:	Thu, 26 Mar 2015 09:31:58 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Yijing Wang <wangyijing@...wei.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Marc Zyngier <marc.zyngier@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tony Luck <tony.luck@...el.com>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Guan Xuetao <gxt@...c.pku.edu.cn>, linux-alpha@...r.kernel.org,
	linux-m68k@...ts.linux-m68k.org, Liviu Dudau <liviu@...au.co.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH v8 10/30] PCI: Introduce pci_host_bridge_list to manage
 host bridges

On Mon, Mar 23, 2015 at 8:34 PM, Yijing Wang <wangyijing@...wei.com> wrote:
> Introduce pci_host_bridge_list to manage pci host
> bridges in system, this make us have the ability
> to check whether the new host would conflict with
> existing one. Then we could remove bus alreay exist
> check in __pci_create_root_bus().

Can we use bus_type instead?
Then we can use bus_find_device for the host_bridge enumeration.

Please refer the patches that I sent out couple years ago.

Thanks

Yinghai

View attachment "pci_host_bridge_bus_type_1.patch" of type "text/x-patch" (2397 bytes)

View attachment "for_each_pci_host_bridge.patch" of type "text/x-patch" (3445 bytes)