libata: Grand renaming.

The biggest change is that ata_host_set is renamed to ata_host.

* ata_host_set			=> ata_host
* ata_probe_ent->host_flags	=> ata_probe_ent->port_flags
* ata_probe_ent->host_set_flags	=> ata_probe_ent->_host_flags
* ata_host_stats		=> ata_port_stats
* ata_port->host		=> ata_port->scsi_host
* ata_port->host_set		=> ata_port->host
* ata_port_info->host_flags	=> ata_port_info->flags
* ata_(.*)host_set(.*)\(\)	=> ata_\1host\2()

The leading underscore in ata_probe_ent->_host_flags is to avoid
reusing ->host_flags for different purpose.  Currently, the only user
of the field is libata-bmdma.c and probe_ent itself is scheduled to be
removed.

ata_port->host is reused for different purpose but this field is used
inside libata core proper and of different type.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

21 files changed, 568 insertions, 573 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 813031c01fba..3f1106fdaed1 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -277,7 +277,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	/* board_ahci */
 	{
 		.sht		= &ahci_sht,
-		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
 				  ATA_FLAG_SKIP_D2H_BSY,
 		.pio_mask	= 0x1f, /* pio0-4 */
@@ -287,7 +287,7 @@ static const struct ata_port_info ahci_port_info[] = {
 	/* board_ahci_vt8251 */
 	{
 		.sht		= &ahci_sht,
-		.host_flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+		.flags		= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
 				  ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
 				  ATA_FLAG_SKIP_D2H_BSY |
 				  AHCI_FLAG_RESET_NEEDS_CLO | AHCI_FLAG_NO_NCQ,
@@ -709,7 +709,7 @@ static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
 static int ahci_clo(struct ata_port *ap)
 {
 	void __iomem *port_mmio = (void __iomem *) ap->ioaddr.cmd_addr;
-	struct ahci_host_priv *hpriv = ap->host_set->private_data;
+	struct ahci_host_priv *hpriv = ap->host->private_data;
 	u32 tmp;
 
 	if (!(hpriv->cap & HOST_CAP_CLO))
@@ -741,7 +741,7 @@ static int ahci_prereset(struct ata_port *ap)
 static int ahci_softreset(struct ata_port *ap, unsigned int *class)
 {
 	struct ahci_port_priv *pp = ap->private_data;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	const u32 cmd_fis_len = 5; /* five dwords */
 	const char *reason = NULL;
@@ -850,7 +850,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class)
 	struct ahci_port_priv *pp = ap->private_data;
 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
 	struct ata_taskfile tf;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	int rc;
 
@@ -1039,7 +1039,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
 
 static void ahci_host_intr(struct ata_port *ap)
 {
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	struct ata_eh_info *ehi = &ap->eh_info;
 	u32 status, qc_active;
@@ -1091,7 +1091,7 @@ static void ahci_irq_clear(struct ata_port *ap)
 
 static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
 {
-	struct ata_host_set *host_set = dev_instance;
+	struct ata_host *host = dev_instance;
 	struct ahci_host_priv *hpriv;
 	unsigned int i, handled = 0;
 	void __iomem *mmio;
@@ -1099,8 +1099,8 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *r
 
 	VPRINTK("ENTER\n");
 
-	hpriv = host_set->private_data;
-	mmio = host_set->mmio_base;
+	hpriv = host->private_data;
+	mmio = host->mmio_base;
 
 	/* sigh.  0xffffffff is a valid return from h/w */
 	irq_stat = readl(mmio + HOST_IRQ_STAT);
@@ -1108,22 +1108,22 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *r
 	if (!irq_stat)
 		return IRQ_NONE;
 
-        spin_lock(&host_set->lock);
+        spin_lock(&host->lock);
 
-        for (i = 0; i < host_set->n_ports; i++) {
+        for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap;
 
 		if (!(irq_stat & (1 << i)))
 			continue;
 
-		ap = host_set->ports[i];
+		ap = host->ports[i];
 		if (ap) {
 			ahci_host_intr(ap);
 			VPRINTK("port %u\n", i);
 		} else {
 			VPRINTK("port %u (no irq)\n", i);
 			if (ata_ratelimit())
-				dev_printk(KERN_WARNING, host_set->dev,
+				dev_printk(KERN_WARNING, host->dev,
 					"interrupt on disabled port %u\n", i);
 		}
 
@@ -1135,7 +1135,7 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance, struct pt_regs *r
 		handled = 1;
 	}
 
-	spin_unlock(&host_set->lock);
+	spin_unlock(&host->lock);
 
 	VPRINTK("EXIT\n");
 
@@ -1157,7 +1157,7 @@ static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
 
 static void ahci_freeze(struct ata_port *ap)
 {
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 
 	/* turn IRQ off */
@@ -1166,7 +1166,7 @@ static void ahci_freeze(struct ata_port *ap)
 
 static void ahci_thaw(struct ata_port *ap)
 {
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	u32 tmp;
 
@@ -1181,7 +1181,7 @@ static void ahci_thaw(struct ata_port *ap)
 
 static void ahci_error_handler(struct ata_port *ap)
 {
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 
 	if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
@@ -1198,7 +1198,7 @@ static void ahci_error_handler(struct ata_port *ap)
 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
 {
 	struct ata_port *ap = qc->ap;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 
 	if (qc->flags & ATA_QCFLAG_FAILED)
@@ -1213,9 +1213,9 @@ static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
 
 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
 {
-	struct ahci_host_priv *hpriv = ap->host_set->private_data;
+	struct ahci_host_priv *hpriv = ap->host->private_data;
 	struct ahci_port_priv *pp = ap->private_data;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	const char *emsg = NULL;
 	int rc;
@@ -1233,8 +1233,8 @@ static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
 static int ahci_port_resume(struct ata_port *ap)
 {
 	struct ahci_port_priv *pp = ap->private_data;
-	struct ahci_host_priv *hpriv = ap->host_set->private_data;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	struct ahci_host_priv *hpriv = ap->host->private_data;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 
 	ahci_init_port(port_mmio, hpriv->cap, pp->cmd_slot_dma, pp->rx_fis_dma);
@@ -1244,8 +1244,8 @@ static int ahci_port_resume(struct ata_port *ap)
 
 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
 {
-	struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);
-	void __iomem *mmio = host_set->mmio_base;
+	struct ata_host *host = dev_get_drvdata(&pdev->dev);
+	void __iomem *mmio = host->mmio_base;
 	u32 ctl;
 
 	if (mesg.event == PM_EVENT_SUSPEND) {
@@ -1264,9 +1264,9 @@ static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
 
 static int ahci_pci_device_resume(struct pci_dev *pdev)
 {
-	struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);
-	struct ahci_host_priv *hpriv = host_set->private_data;
-	void __iomem *mmio = host_set->mmio_base;
+	struct ata_host *host = dev_get_drvdata(&pdev->dev);
+	struct ahci_host_priv *hpriv = host->private_data;
+	void __iomem *mmio = host->mmio_base;
 	int rc;
 
 	ata_pci_device_do_resume(pdev);
@@ -1276,20 +1276,20 @@ static int ahci_pci_device_resume(struct pci_dev *pdev)
 		if (rc)
 			return rc;
 
-		ahci_init_controller(mmio, pdev, host_set->n_ports, hpriv->cap);
+		ahci_init_controller(mmio, pdev, host->n_ports, hpriv->cap);
 	}
 
-	ata_host_set_resume(host_set);
+	ata_host_resume(host);
 
 	return 0;
 }
 
 static int ahci_port_start(struct ata_port *ap)
 {
-	struct device *dev = ap->host_set->dev;
-	struct ahci_host_priv *hpriv = ap->host_set->private_data;
+	struct device *dev = ap->host->dev;
+	struct ahci_host_priv *hpriv = ap->host->private_data;
 	struct ahci_port_priv *pp;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	void *mem;
 	dma_addr_t mem_dma;
@@ -1350,10 +1350,10 @@ static int ahci_port_start(struct ata_port *ap)
 
 static void ahci_port_stop(struct ata_port *ap)
 {
-	struct device *dev = ap->host_set->dev;
-	struct ahci_host_priv *hpriv = ap->host_set->private_data;
+	struct device *dev = ap->host->dev;
+	struct ahci_host_priv *hpriv = ap->host->private_data;
 	struct ahci_port_priv *pp = ap->private_data;
-	void __iomem *mmio = ap->host_set->mmio_base;
+	void __iomem *mmio = ap->host->mmio_base;
 	void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
 	const char *emsg = NULL;
 	int rc;
@@ -1581,7 +1581,7 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	memset(hpriv, 0, sizeof(*hpriv));
 
 	probe_ent->sht		= ahci_port_info[board_idx].sht;
-	probe_ent->host_flags	= ahci_port_info[board_idx].host_flags;
+	probe_ent->port_flags	= ahci_port_info[board_idx].flags;
 	probe_ent->pio_mask	= ahci_port_info[board_idx].pio_mask;
 	probe_ent->udma_mask	= ahci_port_info[board_idx].udma_mask;
 	probe_ent->port_ops	= ahci_port_info[board_idx].port_ops;
@@ -1599,9 +1599,9 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (rc)
 		goto err_out_hpriv;
 
-	if (!(probe_ent->host_flags & AHCI_FLAG_NO_NCQ) &&
+	if (!(probe_ent->port_flags & AHCI_FLAG_NO_NCQ) &&
 	    (hpriv->cap & HOST_CAP_NCQ))
-		probe_ent->host_flags |= ATA_FLAG_NCQ;
+		probe_ent->port_flags |= ATA_FLAG_NCQ;
 
 	ahci_print_info(probe_ent);
 
@@ -1632,27 +1632,27 @@ err_out:
 static void ahci_remove_one (struct pci_dev *pdev)
 {
 	struct device *dev = pci_dev_to_dev(pdev);
-	struct ata_host_set *host_set = dev_get_drvdata(dev);
-	struct ahci_host_priv *hpriv = host_set->private_data;
+	struct ata_host *host = dev_get_drvdata(dev);
+	struct ahci_host_priv *hpriv = host->private_data;
 	unsigned int i;
 	int have_msi;
 
-	for (i = 0; i < host_set->n_ports; i++)
-		ata_port_detach(host_set->ports[i]);
+	for (i = 0; i < host->n_ports; i++)
+		ata_port_detach(host->ports[i]);
 
 	have_msi = hpriv->flags & AHCI_FLAG_MSI;
-	free_irq(host_set->irq, host_set);
+	free_irq(host->irq, host);
 
-	for (i = 0; i < host_set->n_ports; i++) {
-		struct ata_port *ap = host_set->ports[i];
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
 
-		ata_scsi_release(ap->host);
-		scsi_host_put(ap->host);
+		ata_scsi_release(ap->scsi_host);
+		scsi_host_put(ap->scsi_host);
 	}
 
 	kfree(hpriv);
-	pci_iounmap(pdev, host_set->mmio_base);
-	kfree(host_set);
+	pci_iounmap(pdev, host->mmio_base);
+	kfree(host);
 
 	if (have_msi)
 		pci_disable_msi(pdev);
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 0ca4c3b78dc5..22b2dba90b9a 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -151,7 +151,7 @@ struct piix_host_priv {
 
 static int piix_init_one (struct pci_dev *pdev,
 				    const struct pci_device_id *ent);
-static void piix_host_stop(struct ata_host_set *host_set);
+static void piix_host_stop(struct ata_host *host);
 static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev);
 static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev);
 static void piix_pata_error_handler(struct ata_port *ap);
@@ -362,7 +362,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* piix4_pata */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SLAVE_POSS,
+		.flags		= ATA_FLAG_SLAVE_POSS,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 #if 0
 		.mwdma_mask	= 0x06, /* mwdma1-2 */
@@ -376,7 +376,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich5_pata */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SLAVE_POSS | PIIX_FLAG_CHECKINTR,
+		.flags		= ATA_FLAG_SLAVE_POSS | PIIX_FLAG_CHECKINTR,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 #if 0
 		.mwdma_mask	= 0x06, /* mwdma1-2 */
@@ -390,7 +390,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich5_sata */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR |
+		.flags		= ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR |
 				  PIIX_FLAG_IGNORE_PCS,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 		.mwdma_mask	= 0x07, /* mwdma0-2 */
@@ -401,7 +401,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* i6300esb_sata */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA |
+		.flags		= ATA_FLAG_SATA |
 				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_IGNORE_PCS,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 		.mwdma_mask	= 0x07, /* mwdma0-2 */
@@ -412,7 +412,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich6_sata */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA |
+		.flags		= ATA_FLAG_SATA |
 				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_SCR,
 		.pio_mask	= 0x1f,	/* pio0-4 */
 		.mwdma_mask	= 0x07, /* mwdma0-2 */
@@ -423,7 +423,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich6_sata_ahci */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA |
+		.flags		= ATA_FLAG_SATA |
 				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_SCR |
 				  PIIX_FLAG_AHCI,
 		.pio_mask	= 0x1f,	/* pio0-4 */
@@ -435,7 +435,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich6m_sata_ahci */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA |
+		.flags		= ATA_FLAG_SATA |
 				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_SCR |
 				  PIIX_FLAG_AHCI,
 		.pio_mask	= 0x1f,	/* pio0-4 */
@@ -447,7 +447,7 @@ static struct ata_port_info piix_port_info[] = {
 	/* ich8_sata_ahci */
 	{
 		.sht		= &piix_sht,
-		.host_flags	= ATA_FLAG_SATA |
+		.flags		= ATA_FLAG_SATA |
 				  PIIX_FLAG_CHECKINTR | PIIX_FLAG_SCR |
 				  PIIX_FLAG_AHCI,
 		.pio_mask	= 0x1f,	/* pio0-4 */
@@ -485,7 +485,7 @@ MODULE_PARM_DESC(force_pcs, "force honoring or ignoring PCS to work around "
  */
 static void piix_pata_cbl_detect(struct ata_port *ap)
 {
-	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	u8 tmp, mask;
 
 	/* no 80c support in host controller? */
@@ -517,7 +517,7 @@ cbl40:
  */
 static int piix_pata_prereset(struct ata_port *ap)
 {
-	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no])) {
 		ata_port_printk(ap, KERN_INFO, "port disabled. ignoring.\n");
@@ -551,8 +551,8 @@ static void piix_pata_error_handler(struct ata_port *ap)
  */
 static unsigned int piix_sata_present_mask(struct ata_port *ap)
 {
-	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
-	struct piix_host_priv *hpriv = ap->host_set->private_data;
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	struct piix_host_priv *hpriv = ap->host->private_data;
 	const unsigned int *map = hpriv->map;
 	int base = 2 * ap->port_no;
 	unsigned int present_mask = 0;
@@ -631,7 +631,7 @@ static void piix_sata_error_handler(struct ata_port *ap)
 static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev)
 {
 	unsigned int pio	= adev->pio_mode - XFER_PIO_0;
-	struct pci_dev *dev	= to_pci_dev(ap->host_set->dev);
+	struct pci_dev *dev	= to_pci_dev(ap->host->dev);
 	unsigned int is_slave	= (adev->devno != 0);
 	unsigned int master_port= ap->port_no ? 0x42 : 0x40;
 	unsigned int slave_port	= 0x44;
@@ -683,7 +683,7 @@ static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev)
 static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev)
 {
 	unsigned int udma	= adev->dma_mode; /* FIXME: MWDMA too */
-	struct pci_dev *dev	= to_pci_dev(ap->host_set->dev);
+	struct pci_dev *dev	= to_pci_dev(ap->host->dev);
 	u8 maslave		= ap->port_no ? 0x42 : 0x40;
 	u8 speed		= udma;
 	unsigned int drive_dn	= (ap->port_no ? 2 : 0) + adev->devno;
@@ -835,13 +835,13 @@ static void __devinit piix_init_pcs(struct pci_dev *pdev,
 	if (force_pcs == 1) {
 		dev_printk(KERN_INFO, &pdev->dev,
 			   "force ignoring PCS (0x%x)\n", new_pcs);
-		pinfo[0].host_flags |= PIIX_FLAG_IGNORE_PCS;
-		pinfo[1].host_flags |= PIIX_FLAG_IGNORE_PCS;
+		pinfo[0].flags |= PIIX_FLAG_IGNORE_PCS;
+		pinfo[1].flags |= PIIX_FLAG_IGNORE_PCS;
 	} else if (force_pcs == 2) {
 		dev_printk(KERN_INFO, &pdev->dev,
 			   "force honoring PCS (0x%x)\n", new_pcs);
-		pinfo[0].host_flags &= ~PIIX_FLAG_IGNORE_PCS;
-		pinfo[1].host_flags &= ~PIIX_FLAG_IGNORE_PCS;
+		pinfo[0].flags &= ~PIIX_FLAG_IGNORE_PCS;
+		pinfo[1].flags &= ~PIIX_FLAG_IGNORE_PCS;
 	}
 }
 
@@ -881,7 +881,7 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev,
 		default:
 			printk(" P%d", map[i]);
 			if (i & 1)
-				pinfo[i / 2].host_flags |= ATA_FLAG_SLAVE_POSS;
+				pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
 			break;
 		}
 	}
@@ -916,7 +916,7 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	struct ata_port_info port_info[2];
 	struct ata_port_info *ppinfo[2] = { &port_info[0], &port_info[1] };
 	struct piix_host_priv *hpriv;
-	unsigned long host_flags;
+	unsigned long port_flags;
 
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &pdev->dev,
@@ -935,9 +935,9 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	port_info[0].private_data = hpriv;
 	port_info[1].private_data = hpriv;
 
-	host_flags = port_info[0].host_flags;
+	port_flags = port_info[0].flags;
 
-	if (host_flags & PIIX_FLAG_AHCI) {
+	if (port_flags & PIIX_FLAG_AHCI) {
 		u8 tmp;
 		pci_read_config_byte(pdev, PIIX_SCC, &tmp);
 		if (tmp == PIIX_AHCI_DEVICE) {
@@ -948,7 +948,7 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 
 	/* Initialize SATA map */
-	if (host_flags & ATA_FLAG_SATA) {
+	if (port_flags & ATA_FLAG_SATA) {
 		piix_init_sata_map(pdev, port_info,
 				   piix_map_db_table[ent->driver_data]);
 		piix_init_pcs(pdev, port_info,
@@ -961,7 +961,7 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * MSI is disabled (and it is disabled, as we don't use
 	 * message-signalled interrupts currently).
 	 */
-	if (host_flags & PIIX_FLAG_CHECKINTR)
+	if (port_flags & PIIX_FLAG_CHECKINTR)
 		pci_intx(pdev, 1);
 
 	if (piix_check_450nx_errata(pdev)) {
@@ -976,11 +976,11 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	return ata_pci_init_one(pdev, ppinfo, 2);
 }
 
-static void piix_host_stop(struct ata_host_set *host_set)
+static void piix_host_stop(struct ata_host *host)
 {
-	struct piix_host_priv *hpriv = host_set->private_data;
+	struct piix_host_priv *hpriv = host->private_data;
 
-	ata_host_stop(host_set);
+	ata_host_stop(host);
 
 	kfree(hpriv);
 }
diff --git a/drivers/ata/libata-bmdma.c b/drivers/ata/libata-bmdma.c
index 158f62dbf21b..760502859821 100644
--- a/drivers/ata/libata-bmdma.c
+++ b/drivers/ata/libata-bmdma.c
@@ -193,7 +193,7 @@ void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
  *	synchronization with interrupt handler / other threads.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile *tf)
@@ -216,7 +216,7 @@ static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile
  *	FIXME: missing write posting for 400nS delay enforcement
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
@@ -237,7 +237,7 @@ static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile
  *	synchronization with interrupt handler / other threads.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
 {
@@ -422,7 +422,7 @@ u8 ata_altstatus(struct ata_port *ap)
  *	@qc: Info associated with this ATA transaction.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_bmdma_setup_mmio (struct ata_queued_cmd *qc)
@@ -452,7 +452,7 @@ static void ata_bmdma_setup_mmio (struct ata_queued_cmd *qc)
  *	@qc: Info associated with this ATA transaction.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_bmdma_start_mmio (struct ata_queued_cmd *qc)
@@ -483,7 +483,7 @@ static void ata_bmdma_start_mmio (struct ata_queued_cmd *qc)
  *	@qc: Info associated with this ATA transaction.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_bmdma_setup_pio (struct ata_queued_cmd *qc)
@@ -511,7 +511,7 @@ static void ata_bmdma_setup_pio (struct ata_queued_cmd *qc)
  *	@qc: Info associated with this ATA transaction.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_bmdma_start_pio (struct ata_queued_cmd *qc)
@@ -535,7 +535,7 @@ static void ata_bmdma_start_pio (struct ata_queued_cmd *qc)
  *	May be used as the bmdma_start() entry in ata_port_operations.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_bmdma_start(struct ata_queued_cmd *qc)
 {
@@ -557,7 +557,7 @@ void ata_bmdma_start(struct ata_queued_cmd *qc)
  *	May be used as the bmdma_setup() entry in ata_port_operations.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_bmdma_setup(struct ata_queued_cmd *qc)
 {
@@ -577,7 +577,7 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc)
  *	May be used as the irq_clear() entry in ata_port_operations.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 void ata_bmdma_irq_clear(struct ata_port *ap)
@@ -605,7 +605,7 @@ void ata_bmdma_irq_clear(struct ata_port *ap)
  *	May be used as the bmdma_status() entry in ata_port_operations.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 u8 ata_bmdma_status(struct ata_port *ap)
@@ -629,7 +629,7 @@ u8 ata_bmdma_status(struct ata_port *ap)
  *	May be used as the bmdma_stop() entry in ata_port_operations.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 void ata_bmdma_stop(struct ata_queued_cmd *qc)
@@ -838,7 +838,7 @@ ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int
 		bmdma = pci_resource_start(pdev, 4);
 		if (bmdma) {
 			if (inb(bmdma + 2) & 0x80)
-				probe_ent->host_set_flags |= ATA_HOST_SIMPLEX;
+				probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
 			probe_ent->port[p].bmdma_addr = bmdma;
 		}
 		ata_std_ports(&probe_ent->port[p]);
@@ -854,7 +854,7 @@ ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int
 		if (bmdma) {
 			bmdma += 8;
 			if(inb(bmdma + 2) & 0x80)
-				probe_ent->host_set_flags |= ATA_HOST_SIMPLEX;
+				probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
 			probe_ent->port[p].bmdma_addr = bmdma;
 		}
 		ata_std_ports(&probe_ent->port[p]);
@@ -887,7 +887,7 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
 		if (bmdma) {
 			probe_ent->port[0].bmdma_addr = bmdma;
 			if (inb(bmdma + 2) & 0x80)
-				probe_ent->host_set_flags |= ATA_HOST_SIMPLEX;
+				probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
 		}
 		ata_std_ports(&probe_ent->port[0]);
 	} else
@@ -904,7 +904,7 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
 		if (bmdma) {
 			probe_ent->port[1].bmdma_addr = bmdma + 8;
 			if (inb(bmdma + 10) & 0x80)
-				probe_ent->host_set_flags |= ATA_HOST_SIMPLEX;
+				probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
 		}
 		ata_std_ports(&probe_ent->port[1]);
 	} else
@@ -957,7 +957,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
 	else
 		port[1] = port[0];
 
-	if ((port[0]->host_flags & ATA_FLAG_NO_LEGACY) == 0
+	if ((port[0]->flags & ATA_FLAG_NO_LEGACY) == 0
 	    && (pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
 		/* TODO: What if one channel is in native mode ... */
 		pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 9092416a6301..1c9315401f7a 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1335,7 +1335,7 @@ static void ata_dev_config_ncq(struct ata_device *dev,
 	}
 
 	if (ap->flags & ATA_FLAG_NCQ) {
-		hdepth = min(ap->host->can_queue, ATA_MAX_QUEUE - 1);
+		hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE - 1);
 		dev->flags |= ATA_DFLAG_NCQ;
 	}
 
@@ -1349,12 +1349,13 @@ static void ata_set_port_max_cmd_len(struct ata_port *ap)
 {
 	int i;
 
-	if (ap->host) {
-		ap->host->max_cmd_len = 0;
+	if (ap->scsi_host) {
+		unsigned int len = 0;
+
 		for (i = 0; i < ATA_MAX_DEVICES; i++)
-			ap->host->max_cmd_len = max_t(unsigned int,
-						      ap->host->max_cmd_len,
-						      ap->device[i].cdb_len);
+			len = max(len, ap->device[i].cdb_len);
+
+		ap->scsi_host->max_cmd_len = len;
 	}
 }
 
@@ -1662,7 +1663,7 @@ int ata_bus_probe(struct ata_port *ap)
  *	Modify @ap data structure such that the system
  *	thinks that the entire port is enabled.
  *
- *	LOCKING: host_set lock, or some other form of
+ *	LOCKING: host lock, or some other form of
  *	serialization.
  */
 
@@ -1800,7 +1801,7 @@ struct ata_device *ata_dev_pair(struct ata_device *adev)
  *	never attempt to probe or communicate with devices
  *	on this port.
  *
- *	LOCKING: host_set lock, or some other form of
+ *	LOCKING: host lock, or some other form of
  *	serialization.
  */
 
@@ -2258,8 +2259,8 @@ int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
 	/* Record simplex status. If we selected DMA then the other
 	 * host channels are not permitted to do so.
 	 */
-	if (used_dma && (ap->host_set->flags & ATA_HOST_SIMPLEX))
-		ap->host_set->simplex_claimed = 1;
+	if (used_dma && (ap->host->flags & ATA_HOST_SIMPLEX))
+		ap->host->simplex_claimed = 1;
 
 	/* step5: chip specific finalisation */
 	if (ap->ops->post_set_mode)
@@ -2281,7 +2282,7 @@ int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
  *	other threads.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static inline void ata_tf_to_host(struct ata_port *ap,
@@ -2445,7 +2446,7 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
  *
  *	LOCKING:
  *	PCI/etc. bus probe sem.
- *	Obtains host_set lock.
+ *	Obtains host lock.
  *
  *	SIDE EFFECTS:
  *	Sets ATA_FLAG_DISABLED if bus reset fails.
@@ -3080,7 +3081,7 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
 static void ata_dev_xfermask(struct ata_device *dev)
 {
 	struct ata_port *ap = dev->ap;
-	struct ata_host_set *hs = ap->host_set;
+	struct ata_host *host = ap->host;
 	unsigned long xfer_mask;
 
 	/* controller modes available */
@@ -3114,7 +3115,7 @@ static void ata_dev_xfermask(struct ata_device *dev)
 			       "device is on DMA blacklist, disabling DMA\n");
 	}
 
-	if ((hs->flags & ATA_HOST_SIMPLEX) && hs->simplex_claimed) {
+	if ((host->flags & ATA_HOST_SIMPLEX) && host->simplex_claimed) {
 		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
 		ata_dev_printk(dev, KERN_WARNING, "simplex DMA is claimed by "
 			       "other device, disabling DMA\n");
@@ -3207,7 +3208,7 @@ static unsigned int ata_dev_init_params(struct ata_device *dev,
  *	Unmap all mapped DMA memory associated with this command.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 static void ata_sg_clean(struct ata_queued_cmd *qc)
@@ -3267,7 +3268,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
  *	associated with the current disk command.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  */
 static void ata_fill_sg(struct ata_queued_cmd *qc)
@@ -3319,7 +3320,7 @@ static void ata_fill_sg(struct ata_queued_cmd *qc)
  *	supplied PACKET command.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS: 0 when ATAPI DMA can be used
  *               nonzero otherwise
@@ -3341,7 +3342,7 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc)
  *	Prepare ATA taskfile for submission.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_qc_prep(struct ata_queued_cmd *qc)
 {
@@ -3363,7 +3364,7 @@ void ata_noop_qc_prep(struct ata_queued_cmd *qc) { }
  *	to point to a single memory buffer, @buf of byte length @buflen.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
@@ -3394,7 +3395,7 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
  *	elements.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 
 void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
@@ -3413,7 +3414,7 @@ void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
  *	DMA-map the memory buffer associated with queued_cmd @qc.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS:
  *	Zero on success, negative on error.
@@ -3482,7 +3483,7 @@ skip_map:
  *	DMA-map the scatter-gather table associated with queued_cmd @qc.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS:
  *	Zero on success, negative on error.
@@ -3991,7 +3992,7 @@ static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *q
  *	Finish @qc which is running on standard HSM.
  *
  *	LOCKING:
- *	If @in_wq is zero, spin_lock_irqsave(host_set lock).
+ *	If @in_wq is zero, spin_lock_irqsave(host lock).
  *	Otherwise, none on entry and grabs host lock.
  */
 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
@@ -4003,8 +4004,8 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
 		if (in_wq) {
 			spin_lock_irqsave(ap->lock, flags);
 
-			/* EH might have kicked in while host_set lock
-			 * is released.
+			/* EH might have kicked in while host lock is
+			 * released.
 			 */
 			qc = ata_qc_from_tag(ap, qc->tag);
 			if (qc) {
@@ -4369,7 +4370,7 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev)
  *	in case