libata-link: linkify reset

Make reset methods and related functions deal with ata_link instead of
ata_port.

* ata_do_reset()
* ata_eh_reset()
* all prereset/reset/postreset methods and related functions

This patch introduces no behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/ahci.c

@@ -1042,9 +1042,10 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
 	return 0;
 }
 
-static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
+static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
 			     int pmp, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	const char *reason = NULL;
 	unsigned long now, msecs;
 	struct ata_taskfile tf;
@@ -1052,7 +1053,7 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
 
 	DPRINTK("ENTER\n");
 
-	if (ata_link_offline(&ap->link)) {
+	if (ata_link_offline(link)) {
 		DPRINTK("PHY reports no device\n");
 		*class = ATA_DEV_NONE;
 		return 0;
@@ -1061,10 +1062,10 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
 	/* prepare for SRST (AHCI-1.1 10.4.1) */
 	rc = ahci_kick_engine(ap, 1);
 	if (rc)
-		ata_port_printk(ap, KERN_WARNING,
+		ata_link_printk(link, KERN_WARNING,
 				"failed to reset engine (errno=%d)", rc);
 
-	ata_tf_init(ap->link.device, &tf);
+	ata_tf_init(link->device, &tf);
 
 	/* issue the first D2H Register FIS */
 	msecs = 0;
@@ -1109,19 +1110,20 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
 	return 0;
 
  fail:
-	ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
+	ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
 	return rc;
 }
 
-static int ahci_softreset(struct ata_port *ap, unsigned int *class,
+static int ahci_softreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline)
 {
-	return ahci_do_softreset(ap, class, 0, deadline);
+	return ahci_do_softreset(link, class, 0, deadline);
 }
 
-static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
+static int ahci_hardreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct ahci_port_priv *pp = ap->private_data;
 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
 	struct ata_taskfile tf;
@@ -1132,15 +1134,15 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
 	ahci_stop_engine(ap);
 
 	/* clear D2H reception area to properly wait for D2H FIS */
-	ata_tf_init(ap->link.device, &tf);
+	ata_tf_init(link->device, &tf);
 	tf.command = 0x80;
 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
 
-	rc = sata_std_hardreset(ap, class, deadline);
+	rc = sata_std_hardreset(link, class, deadline);
 
 	ahci_start_engine(ap);
 
-	if (rc == 0 && ata_link_online(&ap->link))
+	if (rc == 0 && ata_link_online(link))
 		*class = ahci_dev_classify(ap);
 	if (*class == ATA_DEV_UNKNOWN)
 		*class = ATA_DEV_NONE;
@@ -1149,9 +1151,10 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
 	return rc;
 }
 
-static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
+static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
 				 unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	u32 serror;
 	int rc;
 
@@ -1159,7 +1162,7 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
 
 	ahci_stop_engine(ap);
 
-	rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->link.eh_context),
+	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
 				 deadline);
 
 	/* vt8251 needs SError cleared for the port to operate */
@@ -1176,12 +1179,13 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
 	return rc ?: -EAGAIN;
 }
 
-static void ahci_postreset(struct ata_port *ap, unsigned int *class)
+static void ahci_postreset(struct ata_link *link, unsigned int *class)
 {
+	struct ata_port *ap = link->ap;
 	void __iomem *port_mmio = ahci_port_base(ap);
 	u32 new_tmp, tmp;
 
-	ata_std_postreset(ap, class);
+	ata_std_postreset(link, class);
 
 	/* Make sure port's ATAPI bit is set appropriately */
 	new_tmp = tmp = readl(port_mmio + PORT_CMD);

drivers/ata/ata_piix.c

@@ -657,19 +657,20 @@ static int ich_pata_cable_detect(struct ata_port *ap)
 
 /**
  *	piix_pata_prereset - prereset for PATA host controller
- *	@ap: Target port
+ *	@link: Target link
  *	@deadline: deadline jiffies for the operation
  *
  *	LOCKING:
  *	None (inherited from caller).
  */
-static int piix_pata_prereset(struct ata_port *ap, unsigned long deadline)
+static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
 		return -ENOENT;
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static void piix_pata_error_handler(struct ata_port *ap)

drivers/ata/libata-core.c

@@ -3306,10 +3306,10 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
 
 /**
  *	ata_std_prereset - prepare for reset
- *	@ap: ATA port to be reset
+ *	@link: ATA link to be reset
  *	@deadline: deadline jiffies for the operation
  *
- *	@ap is about to be reset.  Initialize it.  Failure from
+ *	@link is about to be reset.  Initialize it.  Failure from
  *	prereset makes libata abort whole reset sequence and give up
  *	that port, so prereset should be best-effort.  It does its
  *	best to prepare for reset sequence but if things go wrong, it
@@ -3321,9 +3321,9 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
  *	RETURNS:
  *	0 on success, -errno otherwise.
  */
-int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
+int ata_std_prereset(struct ata_link *link, unsigned long deadline)
 {
-	struct ata_link *link = &ap->link;
+	struct ata_port *ap = link->ap;
 	struct ata_eh_context *ehc = &link->eh_context;
 	const unsigned long *timing = sata_ehc_deb_timing(ehc);
 	int rc;
@@ -3342,7 +3342,7 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
 		rc = sata_link_resume(link, timing, deadline);
 		/* whine about phy resume failure but proceed */
 		if (rc && rc != -EOPNOTSUPP)
-			ata_port_printk(ap, KERN_WARNING, "failed to resume "
+			ata_link_printk(link, KERN_WARNING, "failed to resume "
 					"link for reset (errno=%d)\n", rc);
 	}
 
@@ -3352,7 +3352,7 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
 	if (!(ap->flags & ATA_FLAG_SKIP_D2H_BSY) && !ata_link_offline(link)) {
 		rc = ata_wait_ready(ap, deadline);
 		if (rc && rc != -ENODEV) {
-			ata_port_printk(ap, KERN_WARNING, "device not ready "
+			ata_link_printk(link, KERN_WARNING, "device not ready "
 					"(errno=%d), forcing hardreset\n", rc);
 			ehc->i.action |= ATA_EH_HARDRESET;
 		}
@@ -3363,7 +3363,7 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
 
 /**
  *	ata_std_softreset - reset host port via ATA SRST
- *	@ap: port to reset
+ *	@link: ATA link to reset
  *	@classes: resulting classes of attached devices
  *	@deadline: deadline jiffies for the operation
  *
@@ -3375,10 +3375,10 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
  *	RETURNS:
  *	0 on success, -errno otherwise.
  */
-int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
+int ata_std_softreset(struct ata_link *link, unsigned int *classes,
 		      unsigned long deadline)
 {
-	struct ata_link *link = &ap->link;
+	struct ata_port *ap = link->ap;
 	unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
 	unsigned int devmask = 0;
 	int rc;
@@ -3405,7 +3405,7 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
 	rc = ata_bus_softreset(ap, devmask, deadline);
 	/* if link is occupied, -ENODEV too is an error */
 	if (rc && (rc != -ENODEV || sata_scr_valid(link))) {
-		ata_port_printk(ap, KERN_ERR, "SRST failed (errno=%d)\n", rc);
+		ata_link_printk(link, KERN_ERR, "SRST failed (errno=%d)\n", rc);
 		return rc;
 	}
 
@@ -3420,12 +3420,12 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
 }
 
 /**
- *	sata_port_hardreset - reset port via SATA phy reset
- *	@ap: port to reset
+ *	sata_link_hardreset - reset link via SATA phy reset
+ *	@link: link to reset
  *	@timing: timing parameters { interval, duratinon, timeout } in msec
  *	@deadline: deadline jiffies for the operation
  *
- *	SATA phy-reset host port using DET bits of SControl register.
+ *	SATA phy-reset @link using DET bits of SControl register.
  *
  *	LOCKING:
  *	Kernel thread context (may sleep)
@@ -3433,10 +3433,9 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
  *	RETURNS:
  *	0 on success, -errno otherwise.
  */
-int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
+int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
 			unsigned long deadline)
 {
-	struct ata_link *link = &ap->link;
 	u32 scontrol;
 	int rc;
 
@@ -3482,7 +3481,7 @@ int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
 
 /**
  *	sata_std_hardreset - reset host port via SATA phy reset
- *	@ap: port to reset
+ *	@link: link to reset
  *	@class: resulting class of attached device
  *	@deadline: deadline jiffies for the operation
  *
@@ -3495,19 +3494,19 @@ int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
  *	RETURNS:
  *	0 on success, -errno otherwise.
  */
-int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
+int sata_std_hardreset(struct ata_link *link, unsigned int *class,
 		       unsigned long deadline)
 {
-	struct ata_link *link = &ap->link;
+	struct ata_port *ap = link->ap;
 	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
 	int rc;
 
 	DPRINTK("ENTER\n");
 
 	/* do hardreset */
-	rc = sata_port_hardreset(ap, timing, deadline);
+	rc = sata_link_hardreset(link, timing, deadline);
 	if (rc) {
-		ata_port_printk(ap, KERN_ERR,
+		ata_link_printk(link, KERN_ERR,
 				"COMRESET failed (errno=%d)\n", rc);
 		return rc;
 	}
@@ -3525,7 +3524,7 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
 	rc = ata_wait_ready(ap, deadline);
 	/* link occupied, -ENODEV too is an error */
 	if (rc) {
-		ata_port_printk(ap, KERN_ERR,
+		ata_link_printk(link, KERN_ERR,
 				"COMRESET failed (errno=%d)\n", rc);
 		return rc;
 	}
@@ -3540,7 +3539,7 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
 
 /**
  *	ata_std_postreset - standard postreset callback
- *	@ap: the target ata_port
+ *	@link: the target ata_link
  *	@classes: classes of attached devices
  *
  *	This function is invoked after a successful reset.  Note that
@@ -3550,9 +3549,9 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
  *	LOCKING:
  *	Kernel thread context (may sleep)
  */
-void ata_std_postreset(struct ata_port *ap, unsigned int *classes)
+void ata_std_postreset(struct ata_link *link, unsigned int *classes)
 {
-	struct ata_link *link = &ap->link;
+	struct ata_port *ap = link->ap;
 	u32 serror;
 
 	DPRINTK("ENTER\n");
@@ -6946,7 +6945,7 @@ EXPORT_SYMBOL_GPL(__sata_phy_reset);
 EXPORT_SYMBOL_GPL(ata_bus_reset);
 EXPORT_SYMBOL_GPL(ata_std_prereset);
 EXPORT_SYMBOL_GPL(ata_std_softreset);
-EXPORT_SYMBOL_GPL(sata_port_hardreset);
+EXPORT_SYMBOL_GPL(sata_link_hardreset);
 EXPORT_SYMBOL_GPL(sata_std_hardreset);
 EXPORT_SYMBOL_GPL(ata_std_postreset);
 EXPORT_SYMBOL_GPL(ata_dev_classify);

drivers/ata/libata-eh.c

@@ -1737,16 +1737,16 @@ static void ata_eh_report(struct ata_port *ap)
 	}
 }
 
-static int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset,
+static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset,
 			unsigned int *classes, unsigned long deadline)
 {
 	struct ata_device *dev;
 	int rc;
 
-	ata_link_for_each_dev(dev, &ap->link)
+	ata_link_for_each_dev(dev, link)
 		classes[dev->devno] = ATA_DEV_UNKNOWN;
 
-	rc = reset(ap, classes, deadline);
+	rc = reset(link, classes, deadline);
 	if (rc)
 		return rc;
 
@@ -1754,12 +1754,12 @@ static int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset,
 	 * is complete and convert all ATA_DEV_UNKNOWN to
 	 * ATA_DEV_NONE.
 	 */
-	ata_link_for_each_dev(dev, &ap->link)
+	ata_link_for_each_dev(dev, link)
 		if (classes[dev->devno] != ATA_DEV_UNKNOWN)
 			break;
 
 	if (dev) {
-		ata_link_for_each_dev(dev, &ap->link) {
+		ata_link_for_each_dev(dev, link) {
 			if (classes[dev->devno] == ATA_DEV_UNKNOWN)
 				classes[dev->devno] = ATA_DEV_NONE;
 		}
@@ -1780,11 +1780,10 @@ static int ata_eh_followup_srst_needed(int rc, int classify,
 	return 0;
 }
 
-static int ata_eh_reset(struct ata_port *ap, int classify,
+static int ata_eh_reset(struct ata_link *link, int classify,
 			ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
 			ata_reset_fn_t hardreset, ata_postreset_fn_t postreset)
 {
-	struct ata_link *link = &ap->link;
 	struct ata_eh_context *ehc = &link->eh_context;
 	unsigned int *classes = ehc->classes;
 	int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
@@ -1810,10 +1809,10 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 		ehc->i.action |= ATA_EH_HARDRESET;
 
 	if (prereset) {
-		rc = prereset(ap, jiffies + ATA_EH_PRERESET_TIMEOUT);
+		rc = prereset(link, jiffies + ATA_EH_PRERESET_TIMEOUT);
 		if (rc) {
 			if (rc == -ENOENT) {
-				ata_port_printk(ap, KERN_DEBUG,
+				ata_link_printk(link, KERN_DEBUG,
 						"port disabled. ignoring.\n");
 				ehc->i.action &= ~ATA_EH_RESET_MASK;
 
@@ -1822,7 +1821,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 
 				rc = 0;
 			} else
-				ata_port_printk(ap, KERN_ERR,
+				ata_link_printk(link, KERN_ERR,
 					"prereset failed (errno=%d)\n", rc);
 			goto out;
 		}
@@ -1854,7 +1853,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 
 	/* shut up during boot probing */
 	if (verbose)
-		ata_port_printk(ap, KERN_INFO, "%s resetting port\n",
+		ata_link_printk(link, KERN_INFO, "%s resetting link\n",
 				reset == softreset ? "soft" : "hard");
 
 	/* mark that this EH session started with reset */
@@ -1863,7 +1862,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 	else
 		ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
 
-	rc = ata_do_reset(ap, reset, classes, deadline);
+	rc = ata_do_reset(link, reset, classes, deadline);
 
 	if (reset == hardreset &&
 	    ata_eh_followup_srst_needed(rc, classify, classes)) {
@@ -1871,7 +1870,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 		reset = softreset;
 
 		if (!reset) {
-			ata_port_printk(ap, KERN_ERR,
+			ata_link_printk(link, KERN_ERR,
 					"follow-up softreset required "
 					"but no softreset avaliable\n");
 			rc = -EINVAL;
@@ -1879,11 +1878,11 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 		}
 
 		ata_eh_about_to_do(link, NULL, ATA_EH_RESET_MASK);
-		rc = ata_do_reset(ap, reset, classes, deadline);
+		rc = ata_do_reset(link, reset, classes, deadline);
 
 		if (rc == 0 && classify &&
 		    classes[0] == ATA_DEV_UNKNOWN) {
-			ata_port_printk(ap, KERN_ERR,
+			ata_link_printk(link, KERN_ERR,
 					"classification failed\n");
 			rc = -EINVAL;
 			goto out;
@@ -1896,7 +1895,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 		if (time_before(now, deadline)) {
 			unsigned long delta = deadline - jiffies;
 
-			ata_port_printk(ap, KERN_WARNING, "reset failed "
+			ata_link_printk(link, KERN_WARNING, "reset failed "
 				"(errno=%d), retrying in %u secs\n",
 				rc, (jiffies_to_msecs(delta) + 999) / 1000);
 
@@ -1925,7 +1924,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
 			link->sata_spd = (sstatus >> 4) & 0xf;
 
 		if (postreset)
-			postreset(ap, classes);
+			postreset(link, classes);
 
 		/* reset successful, schedule revalidation */
 		ata_eh_done(link, NULL, ehc->i.action & ATA_EH_RESET_MASK);
@@ -2202,7 +2201,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
 	if (ehc->i.action & ATA_EH_RESET_MASK) {
 		ata_eh_freeze_port(ap);
 
-		rc = ata_eh_reset(ap, ata_port_nr_vacant(ap), prereset,
+		rc = ata_eh_reset(&ap->link, ata_port_nr_vacant(ap), prereset,
 				  softreset, hardreset, postreset);
 		if (rc) {
 			ata_port_printk(ap, KERN_ERR,

drivers/ata/pata_amd.c

@@ -119,27 +119,28 @@ static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offse
 }
 
 /**
- *	amd_probe_init		-	perform reset handling
- *	@ap: ATA port
+ *	amd_pre_reset		-	perform reset handling
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Reset sequence checking enable bits to see which ports are
  *	active.
  */
 
-static int amd_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int amd_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits amd_enable_bits[] = {
 		{ 0x40, 1, 0x02, 0x02 },
 		{ 0x40, 1, 0x01, 0x01 }
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static void amd_error_handler(struct ata_port *ap)
@@ -221,25 +222,26 @@ static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
 
 /**
  *	nv_probe_init	-	cable detection
- *	@ap: ATA port
+ *	@lin: ATA link
  *
  *	Perform cable detection. The BIOS stores this in PCI config
  *	space for us.
  */
 
-static int nv_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int nv_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits nv_enable_bits[] = {
 		{ 0x50, 1, 0x02, 0x02 },
 		{ 0x50, 1, 0x01, 0x01 }
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static void nv_error_handler(struct ata_port *ap)

drivers/ata/pata_artop.c

@@ -40,8 +40,9 @@
 
 static int clock = 0;
 
-static int artop6210_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int artop6210_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	const struct pci_bits artop_enable_bits[] = {
 		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
@@ -51,7 +52,7 @@ static int artop6210_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**
@@ -71,27 +72,28 @@ static void artop6210_error_handler(struct ata_port *ap)
 
 /**
  *	artop6260_pre_reset	-	check for 40/80 pin
- *	@ap: Port
+ *	@link: link
  *	@deadline: deadline jiffies for the operation
  *
  *	The ARTOP hardware reports the cable detect bits in register 0x49.
  *	Nothing complicated needed here.
  */
 
-static int artop6260_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int artop6260_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits artop_enable_bits[] = {
 		{ 0x4AU, 1U, 0x02UL, 0x02UL },	/* port 0 */
 		{ 0x4AU, 1U, 0x04UL, 0x04UL },	/* port 1 */
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	/* Odd numbered device ids are the units with enable bits (the -R cards) */
 	if (pdev->device % 1 && !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_atiixp.c

@@ -33,8 +33,9 @@ enum {
 	ATIIXP_IDE_UDMA_MODE 	= 0x56
 };
 
-static int atiixp_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int atiixp_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	static const struct pci_bits atiixp_enable_bits[] = {
 		{ 0x48, 1, 0x01, 0x00 },
 		{ 0x48, 1, 0x08, 0x00 }
@@ -44,7 +45,7 @@ static int atiixp_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &atiixp_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static void atiixp_error_handler(struct ata_port *ap)

drivers/ata/pata_efar.c

@@ -26,25 +26,26 @@
 
 /**
  *	efar_pre_reset	-	Enable bits
- *	@ap: Port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform cable detection for the EFAR ATA interface. This is
  *	different to the PIIX arrangement
  */
 
-static int efar_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int efar_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits efar_enable_bits[] = {
 		{ 0x41U, 1U, 0x80UL, 0x80UL },	/* port 0 */
 		{ 0x43U, 1U, 0x80UL, 0x80UL },	/* port 1 */
 	};
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &efar_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_hpt37x.c

@@ -304,15 +304,16 @@ static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
 
 /**
  *	hpt37x_pre_reset	-	reset the hpt37x bus
- *	@ap: ATA port to reset
+ *	@link: ATA link to reset
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform the initial reset handling for the 370/372 and 374 func 0
  */
 
-static int hpt37x_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	u8 scr2, ata66;
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits hpt37x_enable_bits[] = {
 		{ 0x50, 1, 0x04, 0x04 },
@@ -337,7 +338,7 @@ static int hpt37x_pre_reset(struct ata_port *ap, unsigned long deadline)
 	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
 	udelay(100);
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**
@@ -352,7 +353,7 @@ static void hpt37x_error_handler(struct ata_port *ap)
 	ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
 }
 
-static int hpt374_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int hpt374_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits hpt37x_enable_bits[] = {
 		{ 0x50, 1, 0x04, 0x04 },
@@ -360,6 +361,7 @@ static int hpt374_pre_reset(struct ata_port *ap, unsigned long deadline)
 	};
 	u16 mcr3, mcr6;
 	u8 ata66;
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
@@ -387,7 +389,7 @@ static int hpt374_pre_reset(struct ata_port *ap, unsigned long deadline)
 	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
 	udelay(100);
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_hpt3x2n.c

@@ -141,21 +141,22 @@ static int hpt3x2n_cable_detect(struct ata_port *ap)
 
 /**
  *	hpt3x2n_pre_reset	-	reset the hpt3x2n bus
- *	@ap: ATA port to reset
+ *	@link: ATA link to reset
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform the initial reset handling for the 3x2n series controllers.
  *	Reset the hardware and state machine,
  */
 
-static int hpt3xn_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int hpt3xn_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	/* Reset the state machine */
 	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
 	udelay(100);
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_it8213.c

@@ -23,23 +23,24 @@
 
 /**
  *	it8213_pre_reset	-	check for 40/80 pin
- *	@ap: Port
+ *	@link: link
  *	@deadline: deadline jiffies for the operation
  *
  *	Filter out ports by the enable bits before doing the normal reset
  *	and probe.
  */
 
-static int it8213_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int it8213_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits it8213_enable_bits[] = {
 		{ 0x41U, 1U, 0x80UL, 0x80UL },	/* port 0 */
 	};
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	if (!pci_test_config_bits(pdev, &it8213_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_jmicron.c

@@ -29,7 +29,7 @@ typedef enum {
 
 /**
  *	jmicron_pre_reset	-	check for 40/80 pin
- *	@ap: Port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform the PATA port setup we need.
@@ -39,9 +39,9 @@ typedef enum {
  *	and setup here. We assume that has been done by init_one and the
  *	BIOS.
  */
-
-static int jmicron_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int jmicron_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	u32 control;
 	u32 control5;
@@ -103,7 +103,7 @@ static int jmicron_pre_reset(struct ata_port *ap, unsigned long deadline)
 		ap->cbl = ATA_CBL_SATA;
 		break;
 	}
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_marvell.c

@@ -24,14 +24,15 @@
 
 /**
  *	marvell_pre_reset	-	check for 40/80 pin
- *	@ap: Port
+ *	@link: link
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform the PATA port setup we need.
  */
 
-static int marvell_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	u32 devices;
 	void __iomem *barp;
@@ -54,7 +55,7 @@ static int marvell_pre_reset(struct ata_port *ap, unsigned long deadline)
 	    (!(devices & 0x10)))	/* PATA enable ? */
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 static int marvell_cable_detect(struct ata_port *ap)

drivers/ata/pata_mpiix.c

@@ -46,15 +46,16 @@ enum {
 	SECONDARY = (1 << 14)
 };
 
-static int mpiix_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int mpiix_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits mpiix_enable_bits = { 0x6D, 1, 0x80, 0x80 };
 
 	if (!pci_test_config_bits(pdev, &mpiix_enable_bits))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_ns87410.c

@@ -32,14 +32,15 @@
 
 /**
  *	ns87410_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Check enabled ports
  */
 
-static int ns87410_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int ns87410_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits ns87410_enable_bits[] = {
 		{ 0x43, 1, 0x08, 0x08 },
@@ -49,7 +50,7 @@ static int ns87410_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &ns87410_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_oldpiix.c

@@ -29,14 +29,15 @@
 
 /**
  *	oldpiix_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int oldpiix_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int oldpiix_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits oldpiix_enable_bits[] = {
 		{ 0x41U, 1U, 0x80UL, 0x80UL },	/* port 0 */
@@ -46,7 +47,7 @@ static int oldpiix_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &oldpiix_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_opti.c

@@ -46,14 +46,15 @@ enum {
 
 /**
  *	opti_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int opti_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int opti_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits opti_enable_bits[] = {
 		{ 0x45, 1, 0x80, 0x00 },
@@ -63,7 +64,7 @@ static int opti_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (!pci_test_config_bits(pdev, &opti_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_optidma.c

@@ -47,14 +47,15 @@ static int pci_clock;	/* 0 = 33 1 = 25 */
 
 /**
  *	optidma_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int optidma_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int optidma_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	static const struct pci_bits optidma_enable_bits = {
 		0x40, 1, 0x08, 0x00
@@ -63,7 +64,7 @@ static int optidma_pre_reset(struct ata_port *ap, unsigned long deadline)
 	if (ap->port_no && !pci_test_config_bits(pdev, &optidma_enable_bits))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_pdc2027x.c

@@ -300,7 +300,7 @@ static inline int pdc2027x_port_enabled(struct ata_port *ap)
 
 /**
  *	pdc2027x_prereset - prereset for PATA host controller
- *	@ap: Target port
+ *	@link: Target link
  *	@deadline: deadline jiffies for the operation
  *
  *	Probeinit including cable detection.
@@ -309,12 +309,12 @@ static inline int pdc2027x_port_enabled(struct ata_port *ap)
  *	None (inherited from caller).
  */
 
-static int pdc2027x_prereset(struct ata_port *ap, unsigned long deadline)
+static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline)
 {
 	/* Check whether port enabled */
-	if (!pdc2027x_port_enabled(ap))
+	if (!pdc2027x_port_enabled(link->ap))
 		return -ENOENT;
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 /**

drivers/ata/pata_sil680.c

@@ -95,15 +95,16 @@ static int sil680_cable_detect(struct ata_port *ap) {
 
 /**
  *	sil680_bus_reset	-	reset the SIL680 bus
- *	@ap: ATA port to reset
+ *	@link: ATA link to reset
  *	@deadline: deadline jiffies for the operation
  *
  *	Perform the SIL680 housekeeping when doing an ATA bus reset
  */
 
-static int sil680_bus_reset(struct ata_port *ap,unsigned int *classes,
+static int sil680_bus_reset(struct ata_link *link, unsigned int *classes,
 			    unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	unsigned long addr = sil680_selreg(ap, 0);
 	u8 reset;
@@ -112,7 +113,7 @@ static int sil680_bus_reset(struct ata_port *ap,unsigned int *classes,
 	pci_write_config_byte(pdev, addr, reset | 0x03);
 	udelay(25);
 	pci_write_config_byte(pdev, addr, reset);
-	return ata_std_softreset(ap, classes, deadline);
+	return ata_std_softreset(link, classes, deadline);
 }
 
 static void sil680_error_handler(struct ata_port *ap)

drivers/ata/pata_sis.c

@@ -133,19 +133,20 @@ static int sis_66_cable_detect(struct ata_port *ap)
 
 /**
  *	sis_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int sis_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits sis_enable_bits[] = {
 		{ 0x4aU, 1U, 0x02UL, 0x02UL },	/* port 0 */
 		{ 0x4aU, 1U, 0x04UL, 0x04UL },	/* port 1 */
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
@@ -154,7 +155,7 @@ static int sis_pre_reset(struct ata_port *ap, unsigned long deadline)
 	/* Clear the FIFO settings. We can't enable the FIFO until
 	   we know we are poking at a disk */
 	pci_write_config_byte(pdev, 0x4B, 0);
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 

drivers/ata/pata_sl82c105.c

@@ -43,23 +43,24 @@ enum {
 
 /**
  *	sl82c105_pre_reset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int sl82c105_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int sl82c105_pre_reset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits sl82c105_enable_bits[] = {
 		{ 0x40, 1, 0x01, 0x01 },
 		{ 0x40, 1, 0x10, 0x10 }
 	};
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (ap->port_no && !pci_test_config_bits(pdev, &sl82c105_enable_bits[ap->port_no]))
 		return -ENOENT;
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 

drivers/ata/pata_triflex.c

@@ -47,25 +47,26 @@
 
 /**
  *	triflex_prereset		-	probe begin
- *	@ap: ATA port
+ *	@link: ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	Set up cable type and use generic probe init
  */
 
-static int triflex_prereset(struct ata_port *ap, unsigned long deadline)
+static int triflex_prereset(struct ata_link *link, unsigned long deadline)
 {
 	static const struct pci_bits triflex_enable_bits[] = {
 		{ 0x80, 1, 0x01, 0x01 },
 		{ 0x80, 1, 0x02, 0x02 }
 	};
 
+	struct ata_port *ap = link->ap;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
 	if (!pci_test_config_bits(pdev, &triflex_enable_bits[ap->port_no]))
 		return -ENOENT;
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 

drivers/ata/pata_via.c

@@ -187,8 +187,9 @@ static int via_cable_detect(struct ata_port *ap) {
 	return ATA_CBL_PATA40;
 }
 
-static int via_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int via_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	const struct via_isa_bridge *config = ap->host->private_data;
 
 	if (!(config->flags & VIA_NO_ENABLES)) {
@@ -201,7 +202,7 @@ static int via_pre_reset(struct ata_port *ap, unsigned long deadline)
 			return -ENOENT;
 	}
 
-	return ata_std_prereset(ap, deadline);
+	return ata_std_prereset(link, deadline);
 }
 
 

drivers/ata/sata_inic162x.c

@@ -417,12 +417,13 @@ static void inic_thaw(struct ata_port *ap)
  * SRST and SControl hardreset don't give valid signature on this
  * controller.  Only controller specific hardreset mechanism works.
  */
-static int inic_hardreset(struct ata_port *ap, unsigned int *class,
+static int inic_hardreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	void __iomem *port_base = inic_port_base(ap);
 	void __iomem *idma_ctl = port_base + PORT_IDMA_CTL;
-	const unsigned long *timing = sata_ehc_deb_timing(&ap->link.eh_context);
+	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
 	u16 val;
 	int rc;
 
@@ -435,15 +436,15 @@ static int inic_hardreset(struct ata_port *ap, unsigned int *class,
 	msleep(1);
 	writew(val & ~IDMA_CTL_RST_ATA, idma_ctl);
 
-	rc = sata_link_resume(&ap->link, timing, deadline);
+	rc = sata_link_resume(link, timing, deadline);
 	if (rc) {
-		ata_port_printk(ap, KERN_WARNING, "failed to resume "
+		ata_link_printk(link, KERN_WARNING, "failed to resume "
 				"link after reset (errno=%d)\n", rc);
 		return rc;
 	}
 
 	*class = ATA_DEV_NONE;
-	if (ata_link_online(&ap->link)) {
+	if (ata_link_online(link)) {
 		struct ata_taskfile tf;
 
 		/* wait a while before checking status */
@@ -452,7 +453,7 @@ static int inic_hardreset(struct ata_port *ap, unsigned int *class,
 		rc = ata_wait_ready(ap, deadline);
 		/* link occupied, -ENODEV too is an error */
 		if (rc) {
-			ata_port_printk(ap, KERN_WARNING, "device not ready "
+			ata_link_printk(link, KERN_WARNING, "device not ready "
 					"after hardreset (errno=%d)\n", rc);
 			return rc;
 		}

drivers/ata/sata_mv.c

@@ -2266,10 +2266,11 @@ static void mv_phy_reset(struct ata_port *ap, unsigned int *class,
 	VPRINTK("EXIT\n");
 }
 
-static int mv_prereset(struct ata_port *ap, unsigned long deadline)
+static int mv_prereset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct mv_port_priv *pp	= ap->private_data;
-	struct ata_eh_context *ehc = &ap->link.eh_context;
+	struct ata_eh_context *ehc = &link->eh_context;
 	int rc;
 
 	rc = mv_stop_dma(ap);
@@ -2285,7 +2286,7 @@ static int mv_prereset(struct ata_port *ap, unsigned long deadline)
 	if (ehc->i.action & ATA_EH_HARDRESET)
 		return 0;
 
-	if (ata_link_online(&ap->link))
+	if (ata_link_online(link))
 		rc = ata_wait_ready(ap, deadline);
 	else
 		rc = -ENODEV;
@@ -2293,9 +2294,10 @@ static int mv_prereset(struct ata_port *ap, unsigned long deadline)
 	return rc;
 }
 
-static int mv_hardreset(struct ata_port *ap, unsigned int *class,
+static int mv_hardreset(struct ata_link *link, unsigned int *class,
 			unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct mv_host_priv *hpriv = ap->host->private_data;
 	void __iomem *mmio = ap->host->iomap[MV_PRIMARY_BAR];
 
@@ -2308,16 +2310,17 @@ static int mv_hardreset(struct ata_port *ap, unsigned int *class,
 	return 0;
 }
 
-static void mv_postreset(struct ata_port *ap, unsigned int *classes)
+static void mv_postreset(struct ata_link *link, unsigned int *classes)
 {
+	struct ata_port *ap = link->ap;
 	u32 serr;
 
 	/* print link status */
-	sata_print_link_status(&ap->link);
+	sata_print_link_status(link);
 
 	/* clear SError */
-	sata_scr_read(&ap->link, SCR_ERROR, &serr);
-	sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
+	sata_scr_read(link, SCR_ERROR, &serr);
+	sata_scr_write_flush(link, SCR_ERROR, serr);
 
 	/* bail out if no device is present */
 	if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) {

drivers/ata/sata_nv.c

@@ -1459,7 +1459,7 @@ static void nv_ck804_thaw(struct ata_port *ap)
 	writeb(mask, mmio_base + NV_INT_ENABLE_CK804);
 }
 
-static int nv_hardreset(struct ata_port *ap, unsigned int *class,
+static int nv_hardreset(struct ata_link *link, unsigned int *class,
 			unsigned long deadline)
 {
 	unsigned int dummy;
@@ -1468,7 +1468,7 @@ static int nv_hardreset(struct ata_port *ap, unsigned int *class,
 	 * some controllers.  Don't classify on hardreset.  For more
 	 * info, see http://bugme.osdl.org/show_bug.cgi?id=3352
 	 */
-	return sata_std_hardreset(ap, &dummy, deadline);
+	return sata_std_hardreset(link, &dummy, deadline);
 }
 
 static void nv_error_handler(struct ata_port *ap)

drivers/ata/sata_sil24.c

@@ -583,9 +583,10 @@ static int sil24_exec_polled_cmd(struct ata_port *ap, int pmp,
 	return rc;
 }
 
-static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
+static int sil24_do_softreset(struct ata_link *link, unsigned int *class,
 			      int pmp, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	unsigned long timeout_msec = 0;
 	struct ata_taskfile tf;
 	const char *reason;
@@ -593,7 +594,7 @@ static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
 
 	DPRINTK("ENTER\n");
 
-	if (ata_link_offline(&ap->link)) {
+	if (ata_link_offline(link)) {
 		DPRINTK("PHY reports no device\n");
 		*class = ATA_DEV_NONE;
 		goto out;
@@ -609,7 +610,7 @@ static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
 	if (time_after(deadline, jiffies))
 		timeout_msec = jiffies_to_msecs(deadline - jiffies);
 
-	ata_tf_init(ap->link.device, &tf);	/* doesn't really matter */
+	ata_tf_init(link->device, &tf);	/* doesn't really matter */
 	rc = sil24_exec_polled_cmd(ap, pmp, &tf, 0, PRB_CTRL_SRST,
 				   timeout_msec);
 	if (rc == -EBUSY) {
@@ -631,29 +632,30 @@ static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
 	return 0;
 
  err:
-	ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
+	ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
 	return -EIO;
 }
 
-static int sil24_softreset(struct ata_port *ap, unsigned int *class,
+static int sil24_softreset(struct ata_link *link, unsigned int *class,
 			   unsigned long deadline)
 {
-	return sil24_do_softreset(ap, class, 0, deadline);
+	return sil24_do_softreset(link, class, 0, deadline);
 }
 
-static int sil24_hardreset(struct ata_port *ap, unsigned int *class,
+static int sil24_hardreset(struct ata_link *link, unsigned int *class,
 			   unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	void __iomem *port = ap->ioaddr.cmd_addr;
 	const char *reason;
 	int tout_msec, rc;
 	u32 tmp;
 
 	/* sil24 does the right thing(tm) without any protection */
-	sata_set_spd(&ap->link);
+	sata_set_spd(link);
 
 	tout_msec = 100;
-	if (ata_link_online(&ap->link))
+	if (ata_link_online(link))
 		tout_msec = 5000;
 
 	writel(PORT_CS_DEV_RST, port + PORT_CTRL_STAT);
@@ -663,14 +665,14 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class,
 	/* SStatus oscillates between zero and valid status after
 	 * DEV_RST, debounce it.
 	 */
-	rc = sata_link_debounce(&ap->link, sata_deb_timing_long, deadline);
+	rc = sata_link_debounce(link, sata_deb_timing_long, deadline);
 	if (rc) {
 		reason = "PHY debouncing failed";
 		goto err;
 	}
 
 	if (tmp & PORT_CS_DEV_RST) {
-		if (ata_link_offline(&ap->link))
+		if (ata_link_offline(link))
 			return 0;
 		reason = "link not ready";
 		goto err;
@@ -685,7 +687,7 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class,
 	return -EAGAIN;
 
  err:
-	ata_port_printk(ap, KERN_ERR, "hardreset failed (%s)\n", reason);
+	ata_link_printk(link, KERN_ERR, "hardreset failed (%s)\n", reason);
 	return -EIO;
 }
 

drivers/ata/sata_via.c

@@ -276,7 +276,7 @@ static void svia_noop_freeze(struct ata_port *ap)
 
 /**
  *	vt6420_prereset - prereset for vt6420
- *	@ap: target ATA port
+ *	@link: target ATA link
  *	@deadline: deadline jiffies for the operation
  *
  *	SCR registers on vt6420 are pieces of shit and may hang the
@@ -294,8 +294,9 @@ static void svia_noop_freeze(struct ata_port *ap)
  *	RETURNS:
  *	0 on success, -errno otherwise.
  */
-static int vt6420_prereset(struct ata_port *ap, unsigned long deadline)
+static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
 {
+	struct ata_port *ap = link->ap;
 	struct ata_eh_context *ehc = &ap->link.eh_context;
 	unsigned long timeout = jiffies + (HZ * 5);
 	u32 sstatus, scontrol;

drivers/scsi/ipr.c

@@ -3829,18 +3829,18 @@ static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
 
 /**
  * ipr_sata_reset - Reset the SATA port
- * @ap:		SATA port to reset
+ * @link:	SATA link to reset
  * @classes:	class of the attached device
  *
- * This function issues a SATA phy reset to the affected ATA port.
+ * This function issues a SATA phy reset to the affected ATA link.
  *
  * Return value:
  *	0 on success / non-zero on failure
  **/
-static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
+static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
 				unsigned long deadline)
 {
-	struct ipr_sata_port *sata_port = ap->private_data;
+	struct ipr_sata_port *sata_port = link->ap->private_data;
 	struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
 	struct ipr_resource_entry *res;
 	unsigned long lock_flags = 0;

include/linux/libata.h

@@ -333,14 +333,15 @@ enum ata_completion_errors {
 struct scsi_device;
 struct ata_port_operations;
 struct ata_port;
+struct ata_link;
 struct ata_queued_cmd;
 
 /* typedefs */
 typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
-typedef int (*ata_prereset_fn_t)(struct ata_port *ap, unsigned long deadline);
-typedef int (*ata_reset_fn_t)(struct ata_port *ap, unsigned int *classes,
+typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
+typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
 			      unsigned long deadline);
-typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *classes);
+typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
 
 struct ata_ioports {
 	void __iomem		*cmd_addr;
@@ -706,14 +707,14 @@ extern int sata_link_debounce(struct ata_link *link,
 			const unsigned long *params, unsigned long deadline);
 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
 			    unsigned long deadline);
-extern int ata_std_prereset(struct ata_port *ap, unsigned long deadline);
-extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
+extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
+extern int ata_std_softreset(struct ata_link *link, unsigned int *classes,
 			     unsigned long deadline);
-extern int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
-			       unsigned long deadline);
-extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
+extern int sata_link_hardreset(struct ata_link *link,
+			const unsigned long *timing, unsigned long deadline);
+extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
 			      unsigned long deadline);
-extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes);
+extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
 extern void ata_port_disable(struct ata_port *);
 extern void ata_std_ports(struct ata_ioports *ioaddr);
 #ifdef CONFIG_PCI