diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index d8a0d87..f3fe287 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -220,7 +220,7 @@
 	ide_hwif_t *hwif = HWIF(drive);
 	u64 dma_base = hwif->dma_base;
 	int dma_stat = 0;
-	unsigned long *ending_dma = (unsigned long *) hwif->dma_base2;
+	unsigned long *ending_dma = ide_get_hwifdata(hwif);
 
 	hwif->OUTL(IOC4_S_DMA_STOP, dma_base + IOC4_DMA_CTRL * 4);
 
@@ -369,6 +369,7 @@
 {
 	void __iomem *virt_dma_base;
 	int num_ports = sizeof (ioc4_dma_regs_t);
+	void *pad;
 
 	printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name,
 	       dma_base, dma_base + num_ports - 1);
@@ -400,17 +401,14 @@
 
 	hwif->sg_max_nents = IOC4_PRD_ENTRIES;
 
-	hwif->dma_base2 = (unsigned long)
-		pci_alloc_consistent(hwif->pci_dev,
-				     IOC4_IDE_CACHELINE_SIZE,
-				     (dma_addr_t *) &(hwif->dma_status));
+	pad = pci_alloc_consistent(hwif->pci_dev, IOC4_IDE_CACHELINE_SIZE,
+				   (dma_addr_t *) &(hwif->dma_status));
 
-	if (!hwif->dma_base2)
-		goto dma_base2alloc_failure;
+	if (pad) {
+		ide_set_hwifdata(hwif, pad);
+		return;
+	}
 
-	return;
-
-dma_base2alloc_failure:
 	pci_free_consistent(hwif->pci_dev,
 			    IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
 			    hwif->dmatable_cpu, hwif->dmatable_dma);
@@ -476,7 +474,7 @@
 	hwif->OUTL(dma_addr, dma_base + IOC4_DMA_PTR_L * 4);
 
 	/* Address of the Ending DMA */
-	memset((unsigned int *) hwif->dma_base2, 0, IOC4_IDE_CACHELINE_SIZE);
+	memset(ide_get_hwifdata(hwif), 0, IOC4_IDE_CACHELINE_SIZE);
 	ending_dma_addr = cpu_to_le32(hwif->dma_status);
 	hwif->OUTL(ending_dma_addr, dma_base + IOC4_DMA_END_ADDR * 4);