linux-kernel - Re: [PATCH 1/1] Update acpi_root_bridge

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Message-ID: <507E60C2.6010104@cn.fujitsu.com>
Date:	Wed, 17 Oct 2012 15:39:46 +0800
From:	Tang Chen <tangchen@...fujitsu.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	jiang.liu@...wei.com, bhelgaas@...gle.com, lenb@...nel.org,
	izumi.taku@...fujitsu.com, isimatu.yasuaki@...fujitsu.com,
	linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] Update acpi_root_bridge_list in container hotplug
 path.

On 10/17/2012 01:18 PM, Yinghai Lu wrote:
>
> no, we don't need that.
>
> after closely looking, it seems we can dump acpi_root_bridge.
>
> please check if attached patch could work with container path.

Hi Yinghai,

Your patch seems working well.

BTW, I actually found that the two lists, acpi_root_bridge and
acpi_pci_roots in drivers/acpi/pci_root.c were similar, except
your acpi_root_bridge included PNP0A08.

In the beginning, I thought you would use it in some other situations,
and now it is clear that it can be removed.
Thanks. :)

And also, I have another 2 questions, maybe you can help me.
1) Do we need to put PNP0A08 into acpi_pci_roots ?
2) In container_notify_cb(), when it got a ACPI_NOTIFY_EJECT_REQUEST
    event, it doesn't do the hot-remove things.
    I use your sci emulator patch to test it. I did the following thing:
	echo echo "\_SB_.LSB1" > /sys/kernel/debug/acpi/sci_notify
    where \_SB_.LSB1 is a container, it just did nothing.
    Do we need to support this operation ?

Thanks. :)

>
> Thanks
>
> Yinghai

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