diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index b1781908e1f2caffd4598a35c3037e1a60e59a85..322c4691836a4e85e1e209a8e3afbab1271dea82 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -138,7 +138,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 	ide_hwif_t *hwif	= HWIF(drive);
 	unsigned int dma	= drive->using_dma;
 	u8 lba48		= (drive->addressing == 1) ? 1 : 0;
-	task_ioreg_t command	= WIN_NOP;
+	u8 command		= WIN_NOP;
 	ata_nsector_t		nsectors;
 
 	nsectors.all		= (u16) rq->nr_sectors;
@@ -162,7 +162,7 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 
 	if (drive->select.b.lba) {
 		if (lba48) {
-			task_ioreg_t tasklets[10];
+			u8 tasklets[10];
 
 			pr_debug("%s: LBA=0x%012llx\n", drive->name,
 					(unsigned long long)block);
@@ -171,16 +171,16 @@ static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
 			tasklets[1] = 0;
 			tasklets[2] = nsectors.b.low;
 			tasklets[3] = nsectors.b.high;
-			tasklets[4] = (task_ioreg_t) block;
-			tasklets[5] = (task_ioreg_t) (block>>8);
-			tasklets[6] = (task_ioreg_t) (block>>16);
-			tasklets[7] = (task_ioreg_t) (block>>24);
+			tasklets[4] = (u8) block;
+			tasklets[5] = (u8)(block >>  8);
+			tasklets[6] = (u8)(block >> 16);
+			tasklets[7] = (u8)(block >> 24);
 			if (sizeof(block) == 4) {
-				tasklets[8] = (task_ioreg_t) 0;
-				tasklets[9] = (task_ioreg_t) 0;
+				tasklets[8] = 0;
+				tasklets[9] = 0;
 			} else {
-				tasklets[8] = (task_ioreg_t)((u64)block >> 32);
-				tasklets[9] = (task_ioreg_t)((u64)block >> 40);
+				tasklets[8] = (u8)((u64)block >> 32);
+				tasklets[9] = (u8)((u64)block >> 40);
 			}
 #ifdef DEBUG
 			printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n",
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index bb9693dabe4180b4a1d93031a2115e85f7e22ab2..f4e8a0cf06e21a097d40f2f76d9681dfb9fb08e7 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -902,8 +902,9 @@ EXPORT_SYMBOL(ide_set_handler);
  *	handler and IRQ setup do not race. All IDE command kick off
  *	should go via this function or do equivalent locking.
  */
- 
-void ide_execute_command(ide_drive_t *drive, task_ioreg_t cmd, ide_handler_t *handler, unsigned timeout, ide_expiry_t *expiry)
+
+void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
+			 unsigned timeout, ide_expiry_t *expiry)
 {
 	unsigned long flags;
 	ide_hwgroup_t *hwgroup = HWGROUP(drive);
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 2b60f1b0437e9aa790d446369ac285243bd6719f..91948a46cc6e6d813bff94572ab8277d283b89f0 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -519,8 +519,8 @@ int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 	ide_task_t		args;
 	u8 *outbuf		= NULL;
 	u8 *inbuf		= NULL;
-	task_ioreg_t *argsptr	= args.tfRegister;
-	task_ioreg_t *hobsptr	= args.hobRegister;
+	u8 *argsptr		= args.tfRegister;
+	u8 *hobsptr		= args.hobRegister;
 	int err			= 0;
 	int tasksize		= sizeof(struct ide_task_request_s);
 	unsigned int taskin	= 0;
diff --git a/include/linux/hdreg.h b/include/linux/hdreg.h
index 818c6afc109190affc2d592ea66fb120efdd139f..3bcb88560418c0cd220693ff4c9dbbbca91e30c7 100644
--- a/include/linux/hdreg.h
+++ b/include/linux/hdreg.h
@@ -87,10 +87,10 @@
 #ifndef __KERNEL__
 #define IDE_TASKFILE_STD_OUT_FLAGS	0xFE
 #define IDE_HOB_STD_OUT_FLAGS		0x3C
-#endif
 
 typedef unsigned char task_ioreg_t;
 typedef unsigned long sata_ioreg_t;
+#endif
 
 typedef union ide_reg_valid_s {
 	unsigned all				: 16;
@@ -116,8 +116,8 @@ typedef union ide_reg_valid_s {
 } ide_reg_valid_t;
 
 typedef struct ide_task_request_s {
-	task_ioreg_t	io_ports[8];
-	task_ioreg_t	hob_ports[8];
+	__u8		io_ports[8];
+	__u8		hob_ports[8];
 	ide_reg_valid_t	out_flags;
 	ide_reg_valid_t	in_flags;
 	int		data_phase;
@@ -133,32 +133,32 @@ typedef struct ide_ioctl_request_s {
 } ide_ioctl_request_t;
 
 struct hd_drive_cmd_hdr {
-	task_ioreg_t command;
-	task_ioreg_t sector_number;
-	task_ioreg_t feature;
-	task_ioreg_t sector_count;
+	__u8 command;
+	__u8 sector_number;
+	__u8 feature;
+	__u8 sector_count;
 };
 
 typedef struct hd_drive_task_hdr {
-	task_ioreg_t data;
-	task_ioreg_t feature;
-	task_ioreg_t sector_count;
-	task_ioreg_t sector_number;
-	task_ioreg_t low_cylinder;
-	task_ioreg_t high_cylinder;
-	task_ioreg_t device_head;
-	task_ioreg_t command;
+	__u8 data;
+	__u8 feature;
+	__u8 sector_count;
+	__u8 sector_number;
+	__u8 low_cylinder;
+	__u8 high_cylinder;
+	__u8 device_head;
+	__u8 command;
 } task_struct_t;
 
 typedef struct hd_drive_hob_hdr {
-	task_ioreg_t data;
-	task_ioreg_t feature;
-	task_ioreg_t sector_count;
-	task_ioreg_t sector_number;
-	task_ioreg_t low_cylinder;
-	task_ioreg_t high_cylinder;
-	task_ioreg_t device_head;
-	task_ioreg_t control;
+	__u8 data;
+	__u8 feature;
+	__u8 sector_count;
+	__u8 sector_number;
+	__u8 low_cylinder;
+	__u8 high_cylinder;
+	__u8 device_head;
+	__u8 control;
 } hob_struct_t;
 
 #define TASKFILE_INVALID		0x7fff
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 1fb03b6306761a7d2edea057d6f37ab061ba261f..66a38f1011753ac498d22d56e2d9f82bcabd2ab7 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1019,7 +1019,8 @@ int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
 
 extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
 
-extern void ide_execute_command(ide_drive_t *, task_ioreg_t cmd, ide_handler_t *, unsigned int, ide_expiry_t *);
+void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
+			 ide_expiry_t *);
 
 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
 
@@ -1068,8 +1069,8 @@ typedef struct ide_task_s {
  *	struct hd_drive_hob_hdr		hobf;
  *	hob_struct_t		hobf;
  */
-	task_ioreg_t		tfRegister[8];
-	task_ioreg_t		hobRegister[8];
+	u8			tfRegister[8];
+	u8			hobRegister[8];
 	ide_reg_valid_t		tf_out_flags;
 	ide_reg_valid_t		tf_in_flags;
 	int			data_phase;