Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata: PATA_ARASAN_CF depends on DMADEVICES
  ata: remove unnecessary code
  [libata] Prevent warning during PMP error recovery
  ahci: RAID-mode SATA patch for Intel Panther Point DeviceIDs
  pata_it821x: Fix RAID type display, by adding missing comma
  sata_dwc_460ex: fix error path
  ahci: Enable SB600 64bit DMA on Asus M3A
  libata: report link resume failure as KERN_WARNING instead of ERR
  ahci: move ahci_sb600_softreset to libahci.c and rename it
  libata: leave port thawed after reset failure
  ata: sata_via: Use dev_dbg
  ata: Add and use ata_print_version_once
  ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>
  ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(

67 files changed, 920 insertions, 973 deletions

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 75afa75a515e..ca3e6be44a04 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -313,6 +313,7 @@ config PATA_AMD
 
 config PATA_ARASAN_CF
 	tristate "ARASAN CompactFlash PATA Controller Support"
+	depends on DMADEVICES
 	select DMA_ENGINE
 	help
 	  Say Y here to support the ARASAN CompactFlash PATA controller
diff --git a/drivers/ata/acard-ahci.c b/drivers/ata/acard-ahci.c
index ae22be4157b5..3bc8c79bf2c7 100644
--- a/drivers/ata/acard-ahci.c
+++ b/drivers/ata/acard-ahci.c
@@ -135,8 +135,8 @@ static int acard_ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg
 
 	if (mesg.event & PM_EVENT_SUSPEND &&
 	    hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
-		dev_printk(KERN_ERR, &pdev->dev,
-			   "BIOS update required for suspend/resume\n");
+		dev_err(&pdev->dev,
+			"BIOS update required for suspend/resume\n");
 		return -EIO;
 	}
 
@@ -187,7 +187,7 @@ static int acard_ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
 		if (rc) {
 			rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 			if (rc) {
-				dev_printk(KERN_ERR, &pdev->dev,
+				dev_err(&pdev->dev,
 					   "64-bit DMA enable failed\n");
 				return rc;
 			}
@@ -195,14 +195,13 @@ static int acard_ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
 	} else {
 		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				   "32-bit DMA enable failed\n");
+			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
 			return rc;
 		}
 		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				   "32-bit consistent DMA enable failed\n");
+			dev_err(&pdev->dev,
+				"32-bit consistent DMA enable failed\n");
 			return rc;
 		}
 	}
@@ -343,14 +342,12 @@ static int acard_ahci_port_start(struct ata_port *ap)
 		if (cmd & PORT_CMD_FBSCP)
 			pp->fbs_supported = true;
 		else if (hpriv->flags & AHCI_HFLAG_YES_FBS) {
-			dev_printk(KERN_INFO, dev,
-				   "port %d can do FBS, forcing FBSCP\n",
-				   ap->port_no);
+			dev_info(dev, "port %d can do FBS, forcing FBSCP\n",
+				 ap->port_no);
 			pp->fbs_supported = true;
 		} else
-			dev_printk(KERN_WARNING, dev,
-				   "port %d is not capable of FBS\n",
-				   ap->port_no);
+			dev_warn(dev, "port %d is not capable of FBS\n",
+				 ap->port_no);
 	}
 
 	if (pp->fbs_supported) {
@@ -406,7 +403,6 @@ static int acard_ahci_port_start(struct ata_port *ap)
 
 static int acard_ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
-	static int printed_version;
 	unsigned int board_id = ent->driver_data;
 	struct ata_port_info pi = acard_ahci_port_info[board_id];
 	const struct ata_port_info *ppi[] = { &pi, NULL };
@@ -419,8 +415,7 @@ static int acard_ahci_init_one(struct pci_dev *pdev, const struct pci_device_id
 
 	WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
 
-	if (!printed_version++)
-		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
+	ata_print_version_once(&pdev->dev, DRV_VERSION);
 
 	/* acquire resources */
 	rc = pcim_enable_device(pdev);
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 71afe0371311..fb7b90b05922 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -79,8 +79,6 @@ enum board_ids {
 };
 
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
-static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
-			  unsigned long deadline);
 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
 				 unsigned long deadline);
 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
@@ -104,12 +102,6 @@ static struct ata_port_operations ahci_p5wdh_ops = {
 	.hardreset		= ahci_p5wdh_hardreset,
 };
 
-static struct ata_port_operations ahci_sb600_ops = {
-	.inherits		= &ahci_ops,
-	.softreset		= ahci_sb600_softreset,
-	.pmp_softreset		= ahci_sb600_softreset,
-};
-
 #define AHCI_HFLAGS(flags)	.private_data	= (void *)(flags)
 
 static const struct ata_port_info ahci_port_info[] = {
@@ -188,7 +180,7 @@ static const struct ata_port_info ahci_port_info[] = {
 		.flags		= AHCI_FLAG_COMMON,
 		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
-		.port_ops	= &ahci_sb600_ops,
+		.port_ops	= &ahci_pmp_retry_srst_ops,
 	},
 	[board_ahci_sb700] =	/* for SB700 and SB800 */
 	{
@@ -196,7 +188,7 @@ static const struct ata_port_info ahci_port_info[] = {
 		.flags		= AHCI_FLAG_COMMON,
 		.pio_mask	= ATA_PIO4,
 		.udma_mask	= ATA_UDMA6,
-		.port_ops	= &ahci_sb600_ops,
+		.port_ops	= &ahci_pmp_retry_srst_ops,
 	},
 	[board_ahci_vt8251] =
 	{
@@ -267,6 +259,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VDEVICE(INTEL, 0x1e05), board_ahci }, /* Panther Point RAID */
 	{ PCI_VDEVICE(INTEL, 0x1e06), board_ahci }, /* Panther Point RAID */
 	{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci }, /* Panther Point RAID */
+	{ PCI_VDEVICE(INTEL, 0x1e0e), board_ahci }, /* Panther Point RAID */
 
 	/* JMicron 360/1/3/5/6, match class to avoid IDE function */
 	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
@@ -502,55 +495,6 @@ static void ahci_pci_init_controller(struct ata_host *host)
 	ahci_init_controller(host);
 }
 
-static int ahci_sb600_check_ready(struct ata_link *link)
-{
-	void __iomem *port_mmio = ahci_port_base(link->ap);
-	u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
-	u32 irq_status = readl(port_mmio + PORT_IRQ_STAT);
-
-	/*
-	 * There is no need to check TFDATA if BAD PMP is found due to HW bug,
-	 * which can save timeout delay.
-	 */
-	if (irq_status & PORT_IRQ_BAD_PMP)
-		return -EIO;
-
-	return ata_check_ready(status);
-}
-
-static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
-				unsigned long deadline)
-{
-	struct ata_port *ap = link->ap;
-	void __iomem *port_mmio = ahci_port_base(ap);
-	int pmp = sata_srst_pmp(link);
-	int rc;
-	u32 irq_sts;
-
-	DPRINTK("ENTER\n");
-
-	rc = ahci_do_softreset(link, class, pmp, deadline,
-			       ahci_sb600_check_ready);
-
-	/*
-	 * Soft reset fails on some ATI chips with IPMS set when PMP
-	 * is enabled but SATA HDD/ODD is connected to SATA port,
-	 * do soft reset again to port 0.
-	 */
-	if (rc == -EIO) {
-		irq_sts = readl(port_mmio + PORT_IRQ_STAT);
-		if (irq_sts & PORT_IRQ_BAD_PMP) {
-			ata_link_printk(link, KERN_WARNING,
-					"applying SB600 PMP SRST workaround "
-					"and retrying\n");
-			rc = ahci_do_softreset(link, class, 0, deadline,
-					       ahci_check_ready);
-		}
-	}
-
-	return rc;
-}
-
 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
 				 unsigned long deadline)
 {
@@ -629,8 +573,8 @@ static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
 
 	if (mesg.event & PM_EVENT_SUSPEND &&
 	    hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
-		dev_printk(KERN_ERR, &pdev->dev,
-			   "BIOS update required for suspend/resume\n");
+		dev_err(&pdev->dev,
+			"BIOS update required for suspend/resume\n");
 		return -EIO;
 	}
 
@@ -681,22 +625,21 @@ static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
 		if (rc) {
 			rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 			if (rc) {
-				dev_printk(KERN_ERR, &pdev->dev,
-					   "64-bit DMA enable failed\n");
+				dev_err(&pdev->dev,
+					"64-bit DMA enable failed\n");
 				return rc;
 			}
 		}
 	} else {
 		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				   "32-bit DMA enable failed\n");
+			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
 			return rc;
 		}
 		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 		if (rc) {
-			dev_printk(KERN_ERR, &pdev->dev,
-				   "32-bit consistent DMA enable failed\n");
+			dev_err(&pdev->dev,
+				"32-bit consistent DMA enable failed\n");
 			return rc;
 		}
 	}
@@ -759,8 +702,8 @@ static void ahci_p5wdh_workaround(struct ata_host *host)
 	    dmi_check_system(sysids)) {
 		struct ata_port *ap = host->ports[1];
 
-		dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
-			   "Deluxe on-board SIMG4726 workaround\n");
+		dev_info(&pdev->dev,
+			 "enabling ASUS P5W DH Deluxe on-board SIMG4726 workaround\n");
 
 		ap->ops = &ahci_p5wdh_ops;
 		ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
@@ -811,6 +754,18 @@ static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
 				DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
 			},
 		},
+		/*
+		 * All BIOS versions for the Asus M3A support 64bit DMA.
+		 * (all release versions from 0301 to 1206 were tested)
+		 */
+		{
+			.ident = "ASUS M3A",
+			.matches = {
+				DMI_MATCH(DMI_BOARD_VENDOR,
+					  "ASUSTeK Computer INC."),
+				DMI_MATCH(DMI_BOARD_NAME, "M3A"),
+			},
+		},
 		{ }
 	};
 	const struct dmi_system_id *match;
@@ -831,14 +786,14 @@ static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
 	if (strcmp(buf, match->driver_data) >= 0)
 		goto enable_64bit;
 	else {
-		dev_printk(KERN_WARNING, &pdev->dev, "%s: BIOS too old, "
-			   "forcing 32bit DMA, update BIOS\n", match->ident);
+		dev_warn(&pdev->dev,
+			 "%s: BIOS too old, forcing 32bit DMA, update BIOS\n",
+			 match->ident);
 		return false;
 	}
 
 enable_64bit:
-	dev_printk(KERN_WARNING, &pdev->dev, "%s: enabling 64bit DMA\n",
-		   match->ident);
+	dev_warn(&pdev->dev, "%s: enabling 64bit DMA\n", match->ident);
 	return true;
 }
 
@@ -1041,9 +996,8 @@ static void ahci_gtf_filter_workaround(struct ata_host *host)
 		return;
 
 	filter = (unsigned long)dmi->driver_data;
-	dev_printk(KERN_INFO, host->dev,
-		   "applying extra ACPI _GTF filter 0x%x for %s\n",
-		   filter, dmi->ident);
+	dev_info(host->dev, "applying extra ACPI _GTF filter 0x%x for %s\n",
+		 filter, dmi->ident);
 
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
@@ -1062,7 +1016,6 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host)
 
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
-	static int printed_version;
 	unsigned int board_id = ent->driver_data;
 	struct ata_port_info pi = ahci_port_info[board_id];
 	const struct ata_port_info *ppi[] = { &pi, NULL };
@@ -1075,8 +1028,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
 
-	if (!printed_version++)
-		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
+	ata_print_version_once(&pdev->dev, DRV_VERSION);
 
 	/* The AHCI driver can only drive the SATA ports, the PATA driver
 	   can drive them all so if both drivers are selected make sure
@@ -1099,8 +1051,8 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * that for SAS drives they're out of luck.
 	 */
 	if (pdev->vendor == PCI_VENDOR_ID_PROMISE)
-		dev_printk(KERN_INFO, &pdev->dev, "PDC42819 "
-			   "can only drive SATA devices with this driver\n");
+		dev_info(&pdev->dev,
+			 "PDC42819 can only drive SATA devices with this driver\n");
 
 	/* acquire resources */
 	rc = pcim_enable_device(pdev);
@@ -1126,8 +1078,8 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		 */
 		pci_read_config_byte(pdev, ICH_MAP, &map);
 		if (map & 0x3) {
-			dev_printk(KERN_INFO, &pdev->dev, "controller is in "
-				   "combined mode, can't enable AHCI mode\n");
+			dev_info(&pdev->dev,
+				 "controller is in combined mode, can't enable AHCI mode\n");
 			return -ENODEV;
 		}
 	}
@@ -1184,8 +1136,8 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	if (ahci_broken_suspend(pdev)) {
 		hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
-		dev_printk(KERN_WARNING, &pdev->dev,
-			   "BIOS update required for suspend/resume\n");
+		dev_warn(&pdev->dev,
+			 "BIOS update required for suspend/resume\n");
 	}
 
 	if (ahci_broken_online(pdev)) {
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 12c5282e7fca..b1750007c8dc 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -312,6 +312,7 @@ extern struct device_attribute *ahci_sdev_attrs[];
 	.sdev_attrs		= ahci_sdev_attrs
 
 extern struct ata_port_operations ahci_ops;
+extern struct ata_port_operations ahci_pmp_retry_srst_ops;
 
 void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
 			u32 opts);
diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c
index 721d38bfa339..7df56ec31819 100644
--- a/drivers/ata/ata_generic.c
+++ b/drivers/ata/ata_generic.c
@@ -81,14 +81,13 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
 				xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0);
 			}
 
-			ata_dev_printk(dev, KERN_INFO, "configured for %s\n",
-				       name);
+			ata_dev_info(dev, "configured for %s\n", name);
 
 			dev->xfer_mode = ata_xfer_mask2mode(xfer_mask);
 			dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode);
 			dev->flags &= ~ATA_DFLAG_PIO;
 		} else {
-			ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
+			ata_dev_info(dev, "configured for PIO\n");
 			dev->xfer_mode = XFER_PIO_0;
 			dev->xfer_shift = ATA_SHIFT_PIO;
 			dev->flags |= ATA_DFLAG_PIO;
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 6f6e7718b05c..43107e9415da 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1225,8 +1225,9 @@ static int piix_pci_device_resume(struct pci_dev *pdev)
 		 */
 		rc = pci_reenable_device(pdev);
 		if (rc)
-			dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
-				   "device after resume (%d)\n", rc);
+			dev_err(&pdev->dev,
+				"failed to enable device after resume (%d)\n",
+				rc);
 	} else
 		rc = ata_pci_device_do_resume(pdev);
 
@@ -1303,9 +1304,11 @@ static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
 			no_piix_dma = 2;
 	}
 	if (no_piix_dma)
-		dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
-	if (no_piix_dma == 2)
-		dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
+		dev_warn(&ata_dev->dev,
+			 "450NX errata present, disabling IDE DMA%s\n",
+			 no_piix_dma == 2 ? " - a BIOS update may resolve this"
+			 : "");
+
 	return no_piix_dma;
 }
 
@@ -1338,37 +1341,36 @@ static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
 
 	map = map_db->map[map_value & map_db->mask];
 
-	dev_printk(KERN_INFO, &pdev->dev, "MAP [");
+	dev_info(&pdev->dev, "MAP [");
 	for (i = 0; i < 4; i++) {
 		switch (map[i]) {
 		case RV:
 			invalid_map = 1;
-			printk(" XX");
+			pr_cont(" XX");
 			break;
 
 		case NA:
-			printk(" --");
+			pr_cont(" --");
 			break;
 
 		case IDE:
 			WARN_ON((i & 1) || map[i + 1] != IDE);
 			pinfo[i / 2] = piix_port_info[ich_pata_100];
 			i++;
-			printk(" IDE IDE");
+			pr_cont(" IDE IDE");
 			break;
 
 		default:
-			printk(" P%d", map[i]);
+			pr_cont(" P%d", map[i]);
 			if (i & 1)
 				pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
 			break;
 		}
 	}
-	printk(" ]\n");
+	pr_cont(" ]\n");
 
 	if (invalid_map)
-		dev_printk(KERN_ERR, &pdev->dev,
-			   "invalid MAP value %u\n", map_value);
+		dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);
 
 	return map;
 }
@@ -1398,8 +1400,8 @@ static bool piix_no_sidpr(struct ata_host *host)
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
 	    pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
 	    pdev->subsystem_device == 0xb049) {
-		dev_printk(KERN_WARNING, host->dev,
-			   "Samsung DB-P70 detected, disabling SIDPR\n");
+		dev_warn(host->dev,
+			 "Samsung DB-P70 detected, disabling SIDPR\n");
 		return true;
 	}
 
@@ -1451,8 +1453,8 @@ static int __devinit piix_init_sidpr(struct ata_host *host)
 		piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
 
 		if ((scontrol & 0xf00) != 0x300) {
-			dev_printk(KERN_INFO, host->dev, "SCR access via "
-				   "SIDPR is available but doesn't work\n");
+			dev_info(host->dev,
+				 "SCR access via SIDPR is available but doesn't work\n");
 			return 0;
 		}
 	}
@@ -1501,8 +1503,7 @@ static void piix_iocfg_bit18_quirk(struct ata_host *host)
 	 * affected systems.
 	 */
 	if (hpriv->saved_iocfg & (1 << 18)) {
-		dev_printk(KERN_INFO, &pdev->dev,
-			   "applying IOCFG bit18 quirk\n");
+		dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");
 		pci_write_config_dword(pdev, PIIX_IOCFG,
 				       hpriv->saved_iocfg & ~(1 << 18));
 	}
@@ -1561,7 +1562,6 @@ static bool piix_broken_system_poweroff(struct pci_dev *pdev)
 static int __devinit piix_init_one(struct pci_dev *pdev,
 				   const struct pci_device_id *ent)
 {
-	static int printed_version;
 	struct device *dev = &pdev->dev;
 	struct ata_port_info port_info[2];
 	const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
@@ -1571,9 +1571,7 @@ static int __devinit piix_init_one(struct pci_dev *pdev,
 	struct piix_host_priv *hpriv;
 	int rc;
 
-	if (!printed_version++)
-		dev_printk(KERN_DEBUG, &pdev->dev,
-			   "version " DRV_VERSION "\n");
+	ata_print_version_once(&pdev->dev, DRV_VERSION);
 
 	/* no hotplugging support for later devices (FIXME) */
 	if (!in_module_init && ent->driver_data >= ich5_sata)
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 41223c7f0206..3c92dbd751e0 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -82,6 +82,8 @@ static void ahci_pmp_attach(struct ata_port *ap);
 static void ahci_pmp_detach(struct ata_port *ap);
 static int ahci_softreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline);
+static int ahci_pmp_retry_softreset(struct ata_link *link, unsigned int *class,
+			  unsigned long deadline);
 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline);
 static void ahci_postreset(struct ata_link *link, unsigned int *class);
@@ -178,6 +180,12 @@ struct ata_port_operations ahci_ops = {
 };
 EXPORT_SYMBOL_GPL(ahci_ops);
 
+struct ata_port_operations ahci_pmp_retry_srst_ops = {
+	.inherits		= &ahci_ops,
+	.softreset		= ahci_pmp_retry_softreset,
+};
+EXPORT_SYMBOL_GPL(ahci_pmp_retry_srst_ops);
+
 int ahci_em_messages = 1;
 EXPORT_SYMBOL_GPL(ahci_em_messages);
 module_param(ahci_em_messages, int, 0444);
@@ -286,10 +294,10 @@ static ssize_t ahci_read_em_buffer(struct device *dev,
 	/* the count should not be larger than PAGE_SIZE */
 	if (count > PAGE_SIZE) {