linux-kernel - Re: [PATCH v3, part1 06/10] PCI: make PCI host bridge/bus creating and destroying logic symmetric

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Message-ID: <CAErSpo4AFxSqUfxbw60B8XVk3XxtYfRcLyWDy=yPb0fURV=BQg@mail.gmail.com>
Date:	Wed, 5 Jun 2013 14:14:38 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jiang Liu <liuj97@...il.com>
Cc:	Yinghai Lu <yinghai@...nel.org>, Jiang Liu <jiang.liu@...wei.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Gu Zheng <guz.fnst@...fujitsu.com>,
	Toshi Kani <toshi.kani@...com>,
	Myron Stowe <myron.stowe@...hat.com>,
	Yijing Wang <wangyijing@...wei.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3, part1 06/10] PCI: make PCI host bridge/bus creating
 and destroying logic symmetric

On Sat, May 25, 2013 at 7:48 AM, Jiang Liu <liuj97@...il.com> wrote:
> This patch makes PCI host bridge/bus creating and destroying logic
> symmetric by using device_initialize()/device_add()/device_del()/put_device()
> pairs as discussed in thread at:
> http://comments.gmane.org/gmane.linux.kernel.pci/22073
>
> It also fixes a bug in error recovery path in pci_create_root_bus()
> which may kfree() an in-use host bridge object.

Can you split out the bug fix into a separate patch, in case it's
something we want to backport by itself?  I'd do it myself, but I
didn't understand at a glance what the problem was.

Bjorn
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