* USB card reader trouble
@ 2010-08-04 13:40 Andre Majorel
2010-08-04 14:31 ` Frank Kingswood
0 siblings, 1 reply; 2+ messages in thread
From: Andre Majorel @ 2010-08-04 13:40 UTC (permalink / raw)
To: linux-kernel
I'm having trouble reading Compact flash and SD cards on the
same card reader. I'm not absolutely certain but it *seems* that
once a medium of either type has been inserted, it will ignore
the other type.
Wherever the state is kept, it's not in the module. modprobe -r
usb-storage; modprobe usb-storage gives a kernel message about
"compact flash" even though the only medium in the reader is an
SD card.
Is there a secret /{proc|sys} spell to make it work ?
Thanks in advance.
--
André Majorel http://www.teaser.fr/~amajorel/
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: USB card reader trouble
2010-08-04 13:40 USB card reader trouble Andre Majorel
@ 2010-08-04 14:31 ` Frank Kingswood
0 siblings, 0 replies; 2+ messages in thread
From: Frank Kingswood @ 2010-08-04 14:31 UTC (permalink / raw)
To: Andre Majorel; +Cc: linux-kernel
On 04/08/10 14:40, Andre Majorel wrote:
> I'm having trouble reading Compact flash and SD cards on the
> same card reader. I'm not absolutely certain but it *seems* that
> once a medium of either type has been inserted, it will ignore
> the other type.
>
> Wherever the state is kept, it's not in the module. modprobe -r
> usb-storage; modprobe usb-storage gives a kernel message about
> "compact flash" even though the only medium in the reader is an
> SD card.
Are you sure that this card reader supports both types of cards
simultaneously? Some/many/most card readers share signals between the
connectors to save pins on the IC package.
Frank
^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-08-04 13:40 USB card reader trouble Andre Majorel
2010-08-04 14:31 ` Frank Kingswood
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