-#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0)
-#define pci_map_sg(pdev, sg_list, nseg, direction) (nseg)
-#define pci_unmap_sg(pdev, sg_list, nseg, direction)
-#define sg_dma_address(sg) (VIRT_TO_BUS((sg)->address))
-#define sg_dma_len(sg) ((sg)->length)
-#define pci_map_single(pdev, buffer, bufflen, direction) \
- (VIRT_TO_BUS(buffer))
-#define pci_unmap_single(pdev, buffer, buflen, direction)
-#endif
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,3)
-#define ahd_pci_set_dma_mask pci_set_dma_mask
-#else
-/*
- * Always "return" 0 for success.
- */
-#define ahd_pci_set_dma_mask(dev_softc, mask) \
- (((dev_softc)->dma_mask = mask) && 0)
-#endif