diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 3cdb0749ada453fc5120932c7db66e669c4148fb..77506fec1fbd9d56402cdad4211eb7b6631dd192 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -850,8 +850,7 @@ static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base)
 	printk(KERN_INFO "    %s: BM-DMA at 0x%04lx-0x%04lx",
 	       hwif->name, base, base + 7);
 
-	if (hwif->cds->extra)
-		hwif->extra_base = base + (hwif->channel ? 8 : 16);
+	hwif->extra_base = base + (hwif->channel ? 8 : 16);
 
 	return 0;
 }
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index e4193ef5679782b979d53ce226d257f45dcd0403..84c36c117194cb731e24e2ea60ee7b67e2df5681 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -130,7 +130,6 @@ static const struct ide_port_info hpt34x_chipsets[] __devinitdata = {
 	{ /* 0 */
 		.name		= "HPT343",
 		.init_chipset	= init_chipset_hpt34x,
-		.extra		= 16,
 		.port_ops	= &hpt34x_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT34X | IDE_HFLAG_NON_BOOTABLE,
 		.pio_mask	= ATA_PIO5,
@@ -138,7 +137,6 @@ static const struct ide_port_info hpt34x_chipsets[] __devinitdata = {
 	{ /* 1 */
 		.name		= "HPT345",
 		.init_chipset	= init_chipset_hpt34x,
-		.extra		= 16,
 		.port_ops	= &hpt34x_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT34X | IDE_HFLAG_OFF_BOARD,
 		.pio_mask	= ATA_PIO5,
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index ec77a7a5c61fb2d22cb5e68de4dffd4e36fedd4d..0f313f54fc2773a470e03e788bf698a4b1163766 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1428,7 +1428,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		 * Bit 4 is for the primary channel, bit 5 for the secondary.
 		 */
 		.enablebits	= {{0x50,0x10,0x10}, {0x54,0x04,0x04}},
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX | IDE_HFLAG_SINGLE,
 		.pio_mask	= ATA_PIO4,
@@ -1439,7 +1438,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX,
 		.pio_mask	= ATA_PIO4,
@@ -1450,7 +1448,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX,
 		.pio_mask	= ATA_PIO4,
@@ -1461,7 +1458,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX,
 		.pio_mask	= ATA_PIO4,
@@ -1473,7 +1469,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		.init_dma	= init_dma_hpt366,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= ATA_UDMA5,
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX,
 		.pio_mask	= ATA_PIO4,
@@ -1484,7 +1479,6 @@ static const struct ide_port_info hpt366_chipsets[] __devinitdata = {
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-		.extra		= 240,
 		.port_ops	= &hpt3xx_port_ops,
 		.host_flags	= IDE_HFLAGS_HPT3XX,
 		.pio_mask	= ATA_PIO4,
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 00563e1bfc73896a2f8f5e62ed90581996fd00b6..06617ab16248d84c7df62a9778ff15e51e5c94c1 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -358,7 +358,6 @@ static const struct ide_port_ops pdc2026x_port_ops = {
 		.init_chipset	= init_chipset_pdc202xx, \
 		.init_hwif	= init_hwif_pdc202xx, \
 		.init_dma	= init_dma_pdc202xx, \
-		.extra		= 48, \
 		.port_ops	= &pdc2026x_port_ops, \
 		.host_flags	= IDE_HFLAGS_PDC202XX | extra_flags, \
 		.pio_mask	= ATA_PIO4, \
@@ -373,7 +372,6 @@ static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
 		.port_ops	= &pdc20246_port_ops,
-		.extra		= 16,
 		.host_flags	= IDE_HFLAGS_PDC202XX,
 		.pio_mask	= ATA_PIO4,
 		.mwdma_mask	= ATA_MWDMA2,
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d3d64116957b3b7d19e5fd0f4920bf3a26aa0816..171f8056d05262870a1c291808eef9f6b85daa75 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1111,7 +1111,6 @@ struct ide_port_info {
 
 	ide_pci_enablebit_t	enablebits[2];
 	hwif_chipset_t		chipset;
-	u8			extra;
 	u32			host_flags;
 	u8			pio_mask;
 	u8			swdma_mask;