linux-kernel - Re: Need pci rescan in order to get my mmc reader

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Message-ID: <CAE9FiQXdrKZVCFb4zQ7C=B3sGVGLzBdtCgOkkyA9KdKOiqemww@mail.gmail.com>
Date:	Tue, 14 Feb 2012 11:18:27 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bastien ROUCARIES <roucaries.bastien@...il.com>
Cc:	Chris Ball <cjb@...top.org>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: Need pci rescan in order to get my mmc reader

On Tue, Feb 14, 2012 at 10:17 AM, Bastien ROUCARIES
<roucaries.bastien@...il.com> wrote:
> ping **2
>
> On Thu, Jan 26, 2012 at 10:54 AM, Bastien ROUCARIES
> <roucaries.bastien@...il.com> wrote:
>> On Mon, Jan 23, 2012 at 2:51 PM, Chris Ball <cjb@...top.org> wrote:
>>> Hi,
>>>
>>> On Mon, Jan 23 2012, Bastien ROUCARIES wrote:
>>>> On Sun, Jan 15, 2012 at 12:55 PM, bastien ROUCARIES
>>>> <roucaries.bastien@...il.com> wrote:
>>>>> I am hit by the same bug than here
>>>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/703180
>>>>>
>>>>> I order to get my mmc reader functionnal I need to put a mmc card
>>>>> and do a pci rescan manualy.
>>>>>
>>>>> What could be done  ?
>>>>>
>>>>> What do you need in order to help ?
>>>>>
>>>>> Thanks
>>>
>>> I'm not sure there's anything I (at the MMC layer) can do to help;
>>> having a visible PCI device is a prerequisite for working MMC.
>>>
>>> Have you tried a recent upstream kernel, and looked for any available
>>> BIOS updates for your laptop?
>>
>> BIOS is lasted and kernel is 3.1.
>>
>> I know that  PCI device is a prerequisite  but I believe it is
>> possible to run some quirk on this laptop, in order to get the mmc
>> reader up earlier.
>>
>> See also https://bugzilla.kernel.org/show_bug.cgi?id=40802

can you post full boot log with pci debug enabled?

CONFIG_PCI_DEBUG=y

and "debug ignore_loglevel" in boot command line.

also post:
lspci -tv
lspci -vvxxx
lspci

should have one booted with card inserted and one booted without card inserted.

Yinghai
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