Re: [Em28xx] ehci_hcd map_single: unable to map unsafe buffer on a standard NSLU2

Hi Markus,

To sum up:
- on David's NSLU2, his tuner makes dma errors in ehci_hcd module.
- on my NSLU2, his tuner if I plug his tuner directly on the NSLU2 with 
the v4l-dvb-experimental tree, I get a i2c error.
With a hub plugging the device freezes the kernel but I have not wired 
the serial line to see a kernel oops).
Attached is the /var/log/messages corresponding to my try.

The NSLU2 is a based on a IXP420 CPU (ARMv5TE architecture). The 
internal USB driver is not used, on the PCI bus a NEC USB chip is connected.
See http://www.nslu2-linux.org/wiki/Info/CPUOverview for all infos.

On the debian-arm ML, Lennart Sorensen invoked a CPU usage problem but 
he was talking about the MPEG-TS stream processing.
My cinergyT2 can stream at 33% CPU user consumption on the NSLU2.

Regards,
Thierry


> Hi David,
> 
> Thierry Merle also has an NSLU2, and he also tries to get it work.. or
at
> least to get as far as you are.
> 
> Markus
> 
> On 9/17/07, David & Anne-Sophie <[email protected]> wrote:
>> Hello Markus,
>> Did you find a solution for my problem ?
>> Thanks
>> David
> 
> 
> --
> Markus Rechberger
> 
>

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