On Monday 22 November 2004 10:46, Philipp Schmid wrote:
> Hi,
> 
> ... I was
> unable to find an equivalent to the function dma_to_virt() in my kernel
> tree.  

That's because drivers have no business using such functions.
Especially PIO drivers ...

HCDs just use urb->transfer_dma (or setup_dma) if they need DMA
addresses; that's set up by usbcore.  Otherwise they use the
normal buffer addresses from the URB.

- Dave


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