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 ... Jun
