linux-kernel - Re: [PATCH 2/7] PCI: move resources and bus_list releasing to pci_release

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Message-ID: <CAE9FiQWty+iSv3RdfesoyDZ3q15QeX4fJGFcXS8PxTCese-XzQ@mail.gmail.com>
Date:	Mon, 13 May 2013 20:56:53 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Yijing Wang <wangyijing@...wei.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Gu Zheng <guz.fnst@...fujitsu.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] PCI: move resources and bus_list releasing to pci_release_dev

On Mon, May 13, 2013 at 8:20 PM, Yijing Wang <wangyijing@...wei.com> wrote:
> On 2013/5/14 10:28, Yinghai Lu wrote:
>> We should not release resource in pci_destroy that is too early
>
> Hi Yinghai,
>    "too early" means that after pci_stop_dev(), if someone else
> hold the device reference, it still care the device resource ? e.g.?

I don't mean that.

>
>> as there could be still other use hold reference.

purpose is:
move res releasing as late as possible. so pci_stop_and_remove_bus_device
could be called several times for nested removing via sys.

Yinghai
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