pci_unmap_single - 2.5 kernel

[Brian Murphy <brian@murphy.dk>]

In the 2.5 kernel pci_map_sg contains these lines:

                addr = (unsigned long) page_address(sg->page);
                if (addr)
                        dma_cache_wback_inv(addr, sg->length);

Surely when flushing the offset needs to be added to the page base
address (addr)? So that this reads:

                if (addr)
                        dma_cache_wback_inv(addr + sg->offset, sg->length);


/Brian