diff options
Diffstat (limited to 'xen/include/asm-i386/pci.h')
| -rw-r--r-- | xen/include/asm-i386/pci.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/xen/include/asm-i386/pci.h b/xen/include/asm-i386/pci.h index 1ffade8914..a38bef4986 100644 --- a/xen/include/asm-i386/pci.h +++ b/xen/include/asm-i386/pci.h @@ -151,17 +151,17 @@ static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, for (i = 0; i < nents; i++ ) { if (sg[i].address && sg[i].page) out_of_line_bug(); - - /* not worth checking since NULL is ok says SMH */ #if 0 - else if (!sg[i].address && !sg[i].page) + /* Invalid check, since address==0 is valid. */ + else if (!sg[i].address && !sg[i].page) out_of_line_bug(); #endif - if (sg[i].address) - sg[i].dma_address = virt_to_bus(sg[i].address); - else + /* XXX Switched round, since address==0 is valid. */ + if (sg[i].page) sg[i].dma_address = page_to_bus(sg[i].page) + sg[i].offset; + else + sg[i].dma_address = virt_to_bus(sg[i].address); } flush_write_buffers(); |