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

On Mon, Sep 10, 2007 at 06:09:20PM +0200, David & Anne-Sophie wrote:
> I am trying to use my hybrid USB tuner on my NSLU2.
> Tuner=Terratec cinergy XS
> Driver=http://mcentral.de/wiki/index.php/Em2880
> I plugged it directly to the DISK-2 connector. On DISK-1 there is a USB 
> hard-disk that contains the filesystems.

> When I try tzap to activate the dvb-t stream, I get those errors:
> ehci_hcd 0000:00:01.2: alloc_safe_buffer: could not alloc dma memory 
> (size=36096)
> ehci_hcd 0000:00:01.2: map_single: unable to map unsafe buffer ffc2c000!
> many times (I think one per USB packet).
> And the tuner does not stream anything...

> Do you know what it means and how to solve the issue?

This seems more like a driver and/or kernel issue, than debian/arm
specific issue. You might want to approach Em2880 developers first
for pointers.

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