diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 22fc46d..410a0d1 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -450,8 +450,6 @@
 	if (hwif) {
 		int i;
 
-		memset(&hwif->hw, 0, sizeof(hw_regs_t));
-
 		/*
 		 * Ensure we're using MMIO
 		 */
@@ -459,13 +457,10 @@
 		hwif->mmio = 1;
 
 		for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-			hwif->hw.io_ports[i] = port;
 			hwif->io_ports[i] = port;
 			port += 1 << info->stepping;
 		}
-		hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)base + info->ctrloffset;
 		hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)base + info->ctrloffset;
-		hwif->hw.irq  = ec->irq;
 		hwif->irq     = ec->irq;
 		hwif->noprobe = 0;
 		hwif->chipset = ide_acorn;
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 96cd3f5..0775a3a 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -24,13 +24,11 @@
 		goto out;
 
 	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-		hwif->hw.io_ports[i] = port;
 		hwif->io_ports[i] = port;
 		port += sz;
 	}
-	hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
 	hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
-	hwif->hw.irq = hwif->irq = irq;
+	hwif->irq = irq;
 	hwif->mmio = 1;
 	default_hwif_mmiops(hwif);
 out:
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index b7e872e..674a65c 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -168,7 +168,6 @@
 
 	ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
 
-	memcpy(&hwif->hw, &hw, sizeof(hw));
 	memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
 
 	hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
@@ -214,7 +213,7 @@
 		init_hwif_data(hwif, index);
 		init_hwif_default(hwif, index);
 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
-		hwif->irq = hwif->hw.irq =
+		hwif->irq =
 			ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
 #endif
 	}
@@ -730,8 +729,7 @@
 	}
 	if (hwif->present)
 		return -1;
-	memcpy(&hwif->hw, hw, sizeof(*hw));
-	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
+	memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
 	hwif->irq = hw->irq;
 	hwif->noprobe = 0;
 	hwif->fixup = fixup;
@@ -1417,6 +1415,9 @@
 			"reset", "minus6", "ata66", "minus8", "minus9",
 			"minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
 			"dtc2278", "umc8672", "ali14xx", NULL };
+
+		hw_regs_t hwregs;
+
 		hw = s[3] - '0';
 		hwif = &ide_hwifs[hw];
 		i = match_parm(&s[4], ide_words, vals, 3);
@@ -1526,9 +1527,9 @@
 			case 2: /* base,ctl */
 				vals[2] = 0;	/* default irq = probe for it */
 			case 3: /* base,ctl,irq */
-				hwif->hw.irq = vals[2];
-				ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
-				memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
+				memset(&hwregs, 0, sizeof(hwregs));
+				ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq);
+				memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports));
 				hwif->irq      = vals[2];
 				hwif->noprobe  = 0;
 				hwif->chipset  = ide_forced;
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index 1bc9a57..7bb79f5 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -39,19 +39,18 @@
 	if (hwif == NULL)
 		goto out;
 
-	hwif->hw.io_ports[IDE_DATA_OFFSET] = port;
+	hwif->io_ports[IDE_DATA_OFFSET] = port;
 
 	port += (1 << pdata->ioport_shift);
 	for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET;
 	     i++, port += (1 << pdata->ioport_shift))
-		hwif->hw.io_ports[i] = port;
+		hwif->io_ports[i] = port;
 
-	hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+	hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
 
-	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
-	hwif->hw.irq = hwif->irq = irq;
+	hwif->irq = irq;
 
-	hwif->chipset = hwif->hw.chipset = ide_generic;
+	hwif->chipset = ide_generic;
 
 	if (mmio) {
 		hwif->mmio = 1;
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index be43024..97af57a 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -601,9 +601,9 @@
 	_auide_hwif *ahwif = &auide_hwif;
 	ide_hwif_t *hwif;
 	struct resource *res;
-	hw_regs_t *hw;
 	int ret = 0;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+	hw_regs_t hw;
 
 #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
 	char *mode = "MWDMA2";
@@ -645,12 +645,12 @@
 	/* FIXME:  This might possibly break PCMCIA IDE devices */
 
 	hwif                            = &ide_hwifs[pdev->id];
-	hw 				= &hwif->hw;
-	hwif->irq = hw->irq             = ahwif->irq;
+	hwif->irq			= ahwif->irq;
 	hwif->chipset                   = ide_au1xxx;
 
-	auide_setup_ports(hw, ahwif);
-	memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
+	memset(&hw, 0, sizeof(hw));
+	auide_setup_ports(&hw, ahwif);
+	memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
 
 	hwif->ultra_mask                = 0x0;  /* Disable Ultra DMA */
 #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 6ccc51d..521edd4 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -120,14 +120,11 @@
 	hwif->noprobe = 0;
 
 	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
-		hwif->hw.io_ports[i] =
+		hwif->io_ports[i] =
 				(unsigned long)(base + ((0x1f0 + i) << 5));
-	hwif->hw.io_ports[IDE_CONTROL_OFFSET] =
+	hwif->io_ports[IDE_CONTROL_OFFSET] =
 				(unsigned long)(base + (0x3f6 << 5));
-	hwif->hw.irq = K_INT_GB_IDE;
-
-	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
-	hwif->irq = hwif->hw.irq;
+	hwif->irq = K_INT_GB_IDE;
 
 	idx[0] = hwif->index;
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index f6d4b41..de820aa 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -655,10 +655,12 @@
 	}
 
 	if (hwif->io_ports[IDE_DATA_OFFSET] != cmd_base) {
+		hw_regs_t hw;
+
 		/* Initialize the IO registers */
-		sgiioc4_init_hwif_ports(&hwif->hw, cmd_base, ctl, irqport);
-		memcpy(hwif->io_ports, hwif->hw.io_ports,
-		       sizeof (hwif->io_ports));
+		memset(&hw, 0, sizeof(hw));
+		sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
+		memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
 		hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
 	}
 
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 463bfda..732043b 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -754,16 +754,11 @@
 		hwif->sata_misc[SATA_IEN_OFFSET]	= base + 0x148;
 	}
 
-	hw.irq				= hwif->pci_dev->irq;
+	memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
 
-	memcpy(&hwif->hw, &hw, sizeof(hw));
-	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
+	hwif->irq = dev->irq;
 
-	hwif->irq			= hw.irq;
-
-       	base = (unsigned long) addr;
-
-	hwif->dma_base			= base + (ch ? 0x08 : 0x00);
+	hwif->dma_base = (unsigned long)addr + (ch ? 0x08 : 0x00);
 
 	hwif->mmio = 1;
 }
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 959afe4..816b531 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1040,6 +1040,7 @@
 	struct device_node *np = pmif->node;
 	const int *bidp;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+	hw_regs_t hw;
 
 	pmif->cable_80 = 0;
 	pmif->broken_dma = pmif->broken_dma_warn = 0;
@@ -1125,8 +1126,9 @@
 	/* Tell common code _not_ to mess with resources */
 	hwif->mmio = 1;
 	hwif->hwif_data = pmif;
-	pmac_ide_init_hwif_ports(&hwif->hw, pmif->regbase, 0, &hwif->irq);
-	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
+	memset(&hw, 0, sizeof(hw));
+	pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, &hwif->irq);
+	memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
 	hwif->chipset = ide_pmac;
 	hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
 	hwif->hold = pmif->mediabay;
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 875167e..71be699 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -387,14 +387,15 @@
 		return NULL;	/* no room in ide_hwifs[] */
 	if (hwif->io_ports[IDE_DATA_OFFSET] != base ||
 	    hwif->io_ports[IDE_CONTROL_OFFSET] != (ctl | 2)) {
-		memset(&hwif->hw, 0, sizeof(hwif->hw));
+		hw_regs_t hw;
+
+		memset(&hw, 0, sizeof(hw));
 #ifndef CONFIG_IDE_ARCH_OBSOLETE_INIT
-		ide_std_init_ports(&hwif->hw, base, (ctl | 2));
-		hwif->hw.io_ports[IDE_IRQ_OFFSET] = 0;
+		ide_std_init_ports(&hw, base, ctl | 2);
 #else
-		ide_init_hwif_ports(&hwif->hw, base, (ctl | 2), NULL);
+		ide_init_hwif_ports(&hw, base, ctl | 2, NULL);
 #endif
-		memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
+		memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
 		hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
 	}
 	hwif->chipset = d->chipset ? d->chipset : ide_pci;