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

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Message-ID: <CAE2SPAbpeHiz_JByYGrMJ6s1_yCM3SaQ8xjx4heuT2_i2Gyxcw@mail.gmail.com>
Date:	Thu, 26 Jan 2012 10:54:50 +0100
From:	Bastien ROUCARIES <roucaries.bastien@...il.com>
To:	Chris Ball <cjb@...top.org>
Cc:	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 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

perhap loading by default pci hotplug and do a rescan every second ?

Bastien
>
> Thanks,
>
> - Chris.
> --
> Chris Ball   <cjb@...top.org>   <http://printf.net/>
> One Laptop Per Child
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