Hi, Philipp Schmid writes: > What I have done sofar and I have had some success with, is to alter the > ed->dma field to contain the physical address (i.e. virt_to_phys) of the > corresponding ed structure. I then redefined dma_to_virt to phys_to_virt. > This is not a clean solution and a dirty hack at best and I'm sure I'm going > to run into trouble at some point. Can anyone think of a better way? Could > this functionality easily be patched into my source tree? > I think the only clean solution would be to implement a new version of ohci-q.c that would break down the data from URBs into PTDs directly instead of creating OHCI TDs that cannot be used directly anyway. This would eliminate the necessity to get back a virtual address from a physical or bus address.
In my latest code I'm only accessing the data structures referenced by the _dma fields with the DMA controller which is how it is supposed to be. Lothar Wassmann ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
