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

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Message-ID: <507E6167.6060506@cn.fujitsu.com>
Date:	Wed, 17 Oct 2012 15:42:31 +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 03:39 PM, Tang Chen wrote:
> 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
	==> echo "\_SB_.LSB1 3" > /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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