Re: Linux 2.6.27-git3: no SD card reader

[Alan Jenkins]

Pierre Ossman wrote:
> On Tue, 14 Oct 2008 23:27:59 +0200
> "J.A. MagallÃn" <jamagallon@xxxxxxx> wrote:
>
>
>   
> > > Have you tested more than one card?
> > >       
> > I have two (both unknown brands for me, but I write full names fwiw):
> > - One "MBA Executive HiSpeed SD", 2Gb
> > - One "takeMS SDHC card Class6",  8Gb
> >
> > Both give about 10Mb/s on read with hdparm under 2.6.27.
> >     
>
> And both work fine in one of the slots, but not the other?
>
>   
> > > What machine is this? 
> > >       
> > It's an Acer Aspire One. From what I have seen, there are two SD devices.
> > Both are capable to read SDHC cards, I have switched cards and they work
> > (or at the moment both are working as backwards-compatible in plain SD
> > mode, if that even exists...).
> >     
>
> The SD/SDHC distinction is all software, so the hardware doesn't really
> care.
>
>   
> > I call this half-working because I have to boot with a card inside a slot
> > to have it detected. If i boot without the card-in, it even dissapears from
> > lspci. This is just with the left SD inserted:
> >
> >     
>
> No idea why this occurs. I'd guess some ACPI voodoo. You're going to
> have to check with the PCI and/or ACPI guys to figure that part of the
> mystery out.
>   

This specific problem is what I thought Matthew's acpiphp patch would 
solve - see my comment 
<http://bugzilla.kernel.org/show_bug.cgi?id=11828#c1>.

If I've got this right, then this *specific* issue isnot a regression.

Matthew, if I have confused two similar issues, could you please help by 
explaining the differences?

Thanks
Alan
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