Gerald Champagne wrote:
> Does the latest CVS version work with an IDE controller in DMA mode?
> I have an NEC VR5432 based system working with the IDE controller, but it
> crashes when used in dma mode. I've tracked it down to the following code
> called from ide_build_sglist():
> - blk_rq_map_sg() is called to build a list of blocks to be transferred.
> It sets address = NULL for every entry (other fields like "page" are
> set to valid values).
> - dma_cache_wback_inv(addr, size) is called for each block entry. This
> routine crashes because the address parameter is always set to zero
> when the routine is called.
Did you check what the address is and why it is zero? It seems to me this
might be key ...