Wolfgang Grandegger wrote:

OK, I realized as well, that I stumbeled over untested code. For some

Why the heck is this driver located in drivers/experimental? ;)

reason the kernel of FC 2 uses "zero-copy". I disabled DD_ZEROCOPY and

Could you check this modification in? It seems to be another unwanted dependency on the Linux kernel config.

now it works. Is the rtskb memory contiguous? How is it allocated?
Actually what the DMA engine of the 3c59 needs is a chain of memory
chunk address and size. I will look into this later on.


rtskbs, including the contained payload buffer, are allocated via kmalloc. Therefore, the buffer consists of contignous memory and should cause no DMA problems.

Jan


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