Merge tag 'ata-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata updates from Damien Le Moal:
 "For this cycle, the libata.force kernel parameter changes stand out.
  Beside that, some small cleanups in various drivers. In more detail:

   - Changes to the pata_mpc52xx driver in preparation for powerpc's
     asm/prom.h cleanup, from Christophe.

   - Improved ATA command allocation, from John.

   - Various small cleanups to the pata_via, pata_sil680, pata_ftide010,
     sata_gemini, ahci_brcm drivers and to libata-core, from Sergey,
     Diego, Ruyi, Mighao and Jiabing.

   - Add support for the RZ/G2H SoC to the rcar-sata driver, from Lad.

   - AHCI RAID ID cleanup, from Dan.

   - Improvement to the libata.force kernel parameter to allow most
     horkage flags to be manually forced for debugging drive issues in
     the field without needing recompiling a kernel, from me"

* tag 'ata-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: pata_ftide010: Remove unneeded ERROR check before clk_disable_unprepare
  doc: admin-guide: Update libata kernel parameters
  ata: libata-core: Allow forcing most horkage flags
  ata: libata-core: Improve link flags forced settings
  ata: libata-core: Refactor force_tbl definition
  ata: libata-core: cleanup ata_device_blacklist
  ata: simplify the return expression of brcm_ahci_remove
  ata: Make use of the helper function devm_platform_ioremap_resource()
  ata: libata-core: replace "its" with "it is"
  ahci: Add a generic 'controller2' RAID id
  dt-bindings: ata: renesas,rcar-sata: Add r8a774e1 support
  ata: pata_via: fix sloppy typing in via_do_set_mode()
  ata: pata_sil680: fix result type of sil680_sel{dev|reg}()
  ata: libata-core: fix parameter type in ata_xfer_mode2shift()
  libata: Improve ATA queued command allocation
  ata: pata_mpc52xx: Prepare cleanup of powerpc's asm/prom.h

Documentation/admin-guide/kernel-parameters.txt

@@ -2622,14 +2622,14 @@
 			when set.
 			Format: <int>
 
-	libata.force=	[LIBATA] Force configurations.  The format is comma-
-			separated list of "[ID:]VAL" where ID is
-			PORT[.DEVICE].  PORT and DEVICE are decimal numbers
-			matching port, link or device.  Basically, it matches
-			the ATA ID string printed on console by libata.  If
-			the whole ID part is omitted, the last PORT and DEVICE
-			values are used.  If ID hasn't been specified yet, the
-			configuration applies to all ports, links and devices.
+	libata.force=	[LIBATA] Force configurations.  The format is a comma-
+			separated list of "[ID:]VAL" where ID is PORT[.DEVICE].
+			PORT and DEVICE are decimal numbers matching port, link
+			or device.  Basically, it matches the ATA ID string
+			printed on console by libata.  If the whole ID part is
+			omitted, the last PORT and DEVICE values are used.  If
+			ID hasn't been specified yet, the configuration applies
+			to all ports, links and devices.
 
 			If only DEVICE is omitted, the parameter applies to
 			the port and all links and devices behind it.  DEVICE
@@ -2639,7 +2639,7 @@
 			host link and device attached to it.
 
 			The VAL specifies the configuration to force.  As long
-			as there's no ambiguity shortcut notation is allowed.
+			as there is no ambiguity, shortcut notation is allowed.
 			For example, both 1.5 and 1.5G would work for 1.5Gbps.
 			The following configurations can be forced.
 
@@ -2652,19 +2652,58 @@
 			  udma[/][16,25,33,44,66,100,133] notation is also
 			  allowed.
 
+			* nohrst, nosrst, norst: suppress hard, soft and both
+			  resets.
+
+			* rstonce: only attempt one reset during hot-unplug
+			  link recovery.
+
+			* [no]dbdelay: Enable or disable the extra 200ms delay
+			  before debouncing a link PHY and device presence
+			  detection.
+
 			* [no]ncq: Turn on or off NCQ.
 
-			* [no]ncqtrim: Turn off queued DSM TRIM.
+			* [no]ncqtrim: Enable or disable queued DSM TRIM.
+
+			* [no]ncqati: Enable or disable NCQ trim on ATI chipset.
+
+			* [no]trim: Enable or disable (unqueued) TRIM.
+
+			* trim_zero: Indicate that TRIM command zeroes data.
+
+			* max_trim_128m: Set 128M maximum trim size limit.
+
+			* [no]dma: Turn on or off DMA transfers.
+
+			* atapi_dmadir: Enable ATAPI DMADIR bridge support.
+
+			* atapi_mod16_dma: Enable the use of ATAPI DMA for
+			  commands that are not a multiple of 16 bytes.
+
+			* [no]dmalog: Enable or disable the use of the
+			  READ LOG DMA EXT command to access logs.
+
+			* [no]iddevlog: Enable or disable access to the
+			  identify device data log.
+
+			* [no]logdir: Enable or disable access to the general
+			  purpose log directory.
+
+			* max_sec_128: Set transfer size limit to 128 sectors.
+
+			* max_sec_1024: Set or clear transfer size limit to
+			  1024 sectors.
 
-			* nohrst, nosrst, norst: suppress hard, soft
-			  and both resets.
+			* max_sec_lba48: Set or clear transfer size limit to
+			  65535 sectors.
 
-			* rstonce: only attempt one reset during
-			  hot-unplug link recovery
+			* [no]lpm: Enable or disable link power management.
 
-			* dump_id: dump IDENTIFY data.
+			* [no]setxfer: Indicate if transfer speed mode setting
+			  should be skipped.
 
-			* atapi_dmadir: Enable ATAPI DMADIR bridge support
+			* dump_id: Dump IDENTIFY data.
 
 			* disable: Disable this device.
 

Documentation/devicetree/bindings/ata/renesas,rcar-sata.yaml

@@ -26,6 +26,7 @@ properties:
       - items:
           - enum:
               - renesas,sata-r8a774b1     # RZ/G2N
+              - renesas,sata-r8a774e1     # RZ/G2H
               - renesas,sata-r8a7795      # R-Car H3
               - renesas,sata-r8a77965     # R-Car M3-N
           - const: renesas,rcar-gen3-sata # generic R-Car Gen3 or RZ/G2

Documentation/driver-api/libata.rst

@@ -424,12 +424,6 @@ How commands are issued
 -----------------------
 
 Internal commands
-    First, qc is allocated and initialized using :c:func:`ata_qc_new_init`.
-    Although :c:func:`ata_qc_new_init` doesn't implement any wait or retry
-    mechanism when qc is not available, internal commands are currently
-    issued only during initialization and error recovery, so no other
-    command is active and allocation is guaranteed to succeed.
-
     Once allocated qc's taskfile is initialized for the command to be
     executed. qc currently has two mechanisms to notify completion. One
     is via ``qc->complete_fn()`` callback and the other is completion
@@ -447,11 +441,6 @@ SCSI commands
     translated. No qc is involved in processing a simulated scmd. The
     result is computed right away and the scmd is completed.
 
-    For a translated scmd, :c:func:`ata_qc_new_init` is invoked to allocate a
-    qc and the scmd is translated into the qc. SCSI midlayer's
-    completion notification function pointer is stored into
-    ``qc->scsidone``.
-
     ``qc->complete_fn()`` callback is used for completion notification. ATA
     commands use :c:func:`ata_scsi_qc_complete` while ATAPI commands use
     :c:func:`atapi_qc_complete`. Both functions end up calling ``qc->scsidone``

drivers/ata/ahci.c

@@ -324,7 +324,6 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VDEVICE(INTEL, 0x1d02), board_ahci }, /* PBG AHCI */
 	{ PCI_VDEVICE(INTEL, 0x1d04), board_ahci }, /* PBG RAID */
 	{ PCI_VDEVICE(INTEL, 0x1d06), board_ahci }, /* PBG RAID */
-	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* PBG/Lewisburg RAID*/
 	{ PCI_VDEVICE(INTEL, 0x2323), board_ahci }, /* DH89xxCC AHCI */
 	{ PCI_VDEVICE(INTEL, 0x1e02), board_ahci }, /* Panther Point AHCI */
 	{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci_low_power }, /* Panther M AHCI */
@@ -367,7 +366,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VDEVICE(INTEL, 0x1f3e), board_ahci_avn }, /* Avoton RAID */
 	{ PCI_VDEVICE(INTEL, 0x1f3f), board_ahci_avn }, /* Avoton RAID */
 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg/Lewisburg AHCI*/
-	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg/Lewisburg RAID*/
+	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* *burg SATA0 'RAID' */
+	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* *burg SATA1 'RAID' */
+	{ PCI_VDEVICE(INTEL, 0x282f), board_ahci }, /* *burg SATA2 'RAID' */
 	{ PCI_VDEVICE(INTEL, 0x43d4), board_ahci }, /* Rocket Lake PCH-H RAID */
 	{ PCI_VDEVICE(INTEL, 0x43d5), board_ahci }, /* Rocket Lake PCH-H RAID */
 	{ PCI_VDEVICE(INTEL, 0x43d6), board_ahci }, /* Rocket Lake PCH-H RAID */

drivers/ata/ahci_brcm.c

@@ -549,15 +549,10 @@ static int brcm_ahci_remove(struct platform_device *pdev)
 	struct ata_host *host = dev_get_drvdata(&pdev->dev);
 	struct ahci_host_priv *hpriv = host->private_data;
 	struct brcm_ahci_priv *priv = hpriv->plat_data;
-	int ret;
 
 	brcm_sata_phys_disable(priv);
 
-	ret = ata_platform_remove_one(pdev);
-	if (ret)
-		return ret;
-
-	return 0;
+	return ata_platform_remove_one(pdev);
 }
 
 static void brcm_ahci_shutdown(struct platform_device *pdev)

drivers/ata/libata-core.c

@@ -96,7 +96,8 @@ struct ata_force_param {
 	unsigned long	xfer_mask;
 	unsigned int	horkage_on;
 	unsigned int	horkage_off;
-	u16		lflags;
+	u16		lflags_on;
+	u16		lflags_off;
 };
 
 struct ata_force_ent {
@@ -386,11 +387,17 @@ static void ata_force_link_limits(struct ata_link *link)
 		}
 
 		/* let lflags stack */
-		if (fe->param.lflags) {
-			link->flags |= fe->param.lflags;
+		if (fe->param.lflags_on) {
+			link->flags |= fe->param.lflags_on;
 			ata_link_notice(link,
 					"FORCE: link flag 0x%x forced -> 0x%x\n",
-					fe->param.lflags, link->flags);
+					fe->param.lflags_on, link->flags);
+		}
+		if (fe->param.lflags_off) {
+			link->flags &= ~fe->param.lflags_off;
+			ata_link_notice(link,
+				"FORCE: link flag 0x%x cleared -> 0x%x\n",
+				fe->param.lflags_off, link->flags);
 		}
 	}
 }
@@ -898,7 +905,7 @@ EXPORT_SYMBOL_GPL(ata_xfer_mode2mask);
  *	RETURNS:
  *	Matching xfer_shift, -1 if no match found.
  */
-int ata_xfer_mode2shift(unsigned long xfer_mode)
+int ata_xfer_mode2shift(u8 xfer_mode)
 {
 	const struct ata_xfer_ent *ent;
 
@@ -1398,7 +1405,7 @@ unsigned long ata_id_xfermask(const u16 *id)
 
 		/* But wait.. there's more. Design your standards by
 		 * committee and you too can get a free iordy field to
-		 * process. However its the speeds not the modes that
+		 * process. However it is the speeds not the modes that
 		 * are supported... Note drivers using the timing API
 		 * will get this right anyway
 		 */
@@ -3898,7 +3905,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	/* Devices where NCQ should be avoided */
 	/* NCQ is slow */
 	{ "WDC WD740ADFD-00",	NULL,		ATA_HORKAGE_NONCQ },
-	{ "WDC WD740ADFD-00NLR1", NULL,		ATA_HORKAGE_NONCQ, },
+	{ "WDC WD740ADFD-00NLR1", NULL,		ATA_HORKAGE_NONCQ },
 	/* http://thread.gmane.org/gmane.linux.ide/14907 */
 	{ "FUJITSU MHT2060BH",	NULL,		ATA_HORKAGE_NONCQ },
 	/* NCQ is broken */
@@ -3924,23 +3931,23 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	/* drives which fail FPDMA_AA activation (some may freeze afterwards)
 	   the ST disks also have LPM issues */
 	{ "ST1000LM024 HN-M101MBB", NULL,	ATA_HORKAGE_BROKEN_FPDMA_AA |
-						ATA_HORKAGE_NOLPM, },
+						ATA_HORKAGE_NOLPM },
 	{ "VB0250EAVER",	"HPG7",		ATA_HORKAGE_BROKEN_FPDMA_AA },
 
 	/* Blacklist entries taken from Silicon Image 3124/3132
 	   Windows driver .inf file - also several Linux problem reports */
-	{ "HTS541060G9SA00",    "MB3OC60D",     ATA_HORKAGE_NONCQ, },
-	{ "HTS541080G9SA00",    "MB4OC60D",     ATA_HORKAGE_NONCQ, },
-	{ "HTS541010G9SA00",    "MBZOC60D",     ATA_HORKAGE_NONCQ, },
+	{ "HTS541060G9SA00",    "MB3OC60D",     ATA_HORKAGE_NONCQ },
+	{ "HTS541080G9SA00",    "MB4OC60D",     ATA_HORKAGE_NONCQ },
+	{ "HTS541010G9SA00",    "MBZOC60D",     ATA_HORKAGE_NONCQ },
 
 	/* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */
-	{ "C300-CTFDDAC128MAG",	"0001",		ATA_HORKAGE_NONCQ, },
+	{ "C300-CTFDDAC128MAG",	"0001",		ATA_HORKAGE_NONCQ },
 
 	/* Sandisk SD7/8/9s lock up hard on large trims */
-	{ "SanDisk SD[789]*",	NULL,		ATA_HORKAGE_MAX_TRIM_128M, },
+	{ "SanDisk SD[789]*",	NULL,		ATA_HORKAGE_MAX_TRIM_128M },
 
 	/* devices which puke on READ_NATIVE_MAX */
-	{ "HDS724040KLSA80",	"KFAOA20N",	ATA_HORKAGE_BROKEN_HPA, },
+	{ "HDS724040KLSA80",	"KFAOA20N",	ATA_HORKAGE_BROKEN_HPA },
 	{ "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA },
 	{ "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA },
 	{ "MAXTOR 6L080L4",	"A93.0500",	ATA_HORKAGE_BROKEN_HPA },
@@ -3949,22 +3956,22 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	{ "OCZ-VERTEX",		    "1.30",	ATA_HORKAGE_BROKEN_HPA },
 
 	/* Devices which report 1 sector over size HPA */
-	{ "ST340823A",		NULL,		ATA_HORKAGE_HPA_SIZE, },
-	{ "ST320413A",		NULL,		ATA_HORKAGE_HPA_SIZE, },
-	{ "ST310211A",		NULL,		ATA_HORKAGE_HPA_SIZE, },
+	{ "ST340823A",		NULL,		ATA_HORKAGE_HPA_SIZE },
+	{ "ST320413A",		NULL,		ATA_HORKAGE_HPA_SIZE },
+	{ "ST310211A",		NULL,		ATA_HORKAGE_HPA_SIZE },
 
 	/* Devices which get the IVB wrong */
-	{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, },
+	{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB },
 	/* Maybe we should just blacklist TSSTcorp... */
-	{ "TSSTcorp CDDVDW SH-S202[HJN]", "SB0[01]",  ATA_HORKAGE_IVB, },
+	{ "TSSTcorp CDDVDW SH-S202[HJN]", "SB0[01]",  ATA_HORKAGE_IVB },
 
 	/* Devices that do not need bridging limits applied */
-	{ "MTRON MSP-SATA*",		NULL,	ATA_HORKAGE_BRIDGE_OK, },
-	{ "BUFFALO HD-QSU2/R5",		NULL,	ATA_HORKAGE_BRIDGE_OK, },
+	{ "MTRON MSP-SATA*",		NULL,	ATA_HORKAGE_BRIDGE_OK },
+	{ "BUFFALO HD-QSU2/R5",		NULL,	ATA_HORKAGE_BRIDGE_OK },
 
 	/* Devices which aren't very happy with higher link speeds */
-	{ "WD My Book",			NULL,	ATA_HORKAGE_1_5_GBPS, },
-	{ "Seagate FreeAgent GoFlex",	NULL,	ATA_HORKAGE_1_5_GBPS, },
+	{ "WD My Book",			NULL,	ATA_HORKAGE_1_5_GBPS },
+	{ "Seagate FreeAgent GoFlex",	NULL,	ATA_HORKAGE_1_5_GBPS },
 
 	/*
 	 * Devices which choke on SETXFER.  Applies only if both the
@@ -3982,57 +3989,57 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	/* 512GB MX100 with MU01 firmware has both queued TRIM and LPM issues */
 	{ "Crucial_CT512MX100*",	"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NOLPM, },
+						ATA_HORKAGE_NOLPM },
 	/* 512GB MX100 with newer firmware has only LPM issues */
 	{ "Crucial_CT512MX100*",	NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NOLPM, },
+						ATA_HORKAGE_NOLPM },
 
 	/* 480GB+ M500 SSDs have both queued TRIM and LPM issues */
 	{ "Crucial_CT480M500*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NOLPM, },
+						ATA_HORKAGE_NOLPM },
 	{ "Crucial_CT960M500*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NOLPM, },
+						ATA_HORKAGE_NOLPM },
 
 	/* These specific Samsung models/firmware-revs do not handle LPM well */
-	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM, },
-	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_HORKAGE_NOLPM, },
-	{ "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_HORKAGE_NOLPM, },
-	{ "SAMSUNG MZ7TE512HMHP-000L1", "EXT06L0Q", ATA_HORKAGE_NOLPM, },
+	{ "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM },
+	{ "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_HORKAGE_NOLPM },
+	{ "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_HORKAGE_NOLPM },
+	{ "SAMSUNG MZ7TE512HMHP-000L1", "EXT06L0Q", ATA_HORKAGE_NOLPM },
 
 	/* devices that don't properly handle queued TRIM commands */
 	{ "Micron_M500IT_*",		"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Micron_M500_*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Crucial_CT*M500*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Micron_M5[15]0_*",		"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Crucial_CT*M550*",		"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Crucial_CT*MX100*",		"MU01",	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Samsung SSD 840 EVO*",	NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_NO_DMA_LOG |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Samsung SSD 840*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Samsung SSD 850*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 	{ "Samsung SSD 860*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NO_NCQ_ON_ATI, },
+						ATA_HORKAGE_NO_NCQ_ON_ATI },
 	{ "Samsung SSD 870*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
 						ATA_HORKAGE_ZERO_AFTER_TRIM |
-						ATA_HORKAGE_NO_NCQ_ON_ATI, },
+						ATA_HORKAGE_NO_NCQ_ON_ATI },
 	{ "FCCT*M500*",			NULL,	ATA_HORKAGE_NO_NCQ_TRIM |
-						ATA_HORKAGE_ZERO_AFTER_TRIM, },
+						ATA_HORKAGE_ZERO_AFTER_TRIM },
 
 	/* devices that don't properly handle TRIM commands */
-	{ "SuperSSpeed S238*",		NULL,	ATA_HORKAGE_NOTRIM, },
-	{ "M88V29*",			NULL,	ATA_HORKAGE_NOTRIM, },
+	{ "SuperSSpeed S238*",		NULL,	ATA_HORKAGE_NOTRIM },
+	{ "M88V29*",			NULL,	ATA_HORKAGE_NOTRIM },
 
 	/*
 	 * As defined, the DRAT (Deterministic Read After Trim) and RZAT
@@ -4050,16 +4057,16 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	 * The intel 510 drive has buggy DRAT/RZAT. Explicitly exclude
 	 * that model before whitelisting all other intel SSDs.
 	 */
-	{ "INTEL*SSDSC2MH*",		NULL,	0, },
+	{ "INTEL*SSDSC2MH*",		NULL,	0 },
 
-	{ "Micron*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "Crucial*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "INTEL*SSD*", 		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "SSD*INTEL*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "Samsung*SSD*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "SAMSUNG*SSD*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "SAMSUNG*MZ7KM*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
-	{ "ST[1248][0248]0[FH]*",	NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM, },
+	{ "Micron*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "Crucial*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "INTEL*SSD*", 		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "SSD*INTEL*",			NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "Samsung*SSD*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*SSD*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "SAMSUNG*MZ7KM*",		NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
+	{ "ST[1248][0248]0[FH]*",	NULL,	ATA_HORKAGE_ZERO_AFTER_TRIM },
 
 	/*
 	 * Some WD SATA-I drives spin up and down erratically when the link
@@ -4566,42 +4573,6 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words)
 #endif /* __BIG_ENDIAN */
 }
 
-/**
- *	ata_qc_new_init - Request an available ATA command, and initialize it
- *	@dev: Device from whom we request an available command structure
- *	@tag: tag
- *
- *	LOCKING:
- *	None.
- */
-
-struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag)
-{
-	struct ata_port *ap = dev->link->ap;
-	struct ata_queued_cmd *qc;
-
-	/* no command while frozen */
-	if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
-		return NULL;
-
-	/* libsas case */
-	if (ap->flags & ATA_FLAG_SAS_HOST) {
-		tag = ata_sas_allocate_tag(ap);
-		if (tag < 0)
-			return NULL;
-	}
-
-	qc = __ata_qc_from_tag(ap, tag);
-	qc->tag = qc->hw_tag = tag;
-	qc->scsicmd = NULL;
-	qc->ap = ap;
-	qc->dev = dev;
-
-	ata_qc_reinit(qc);
-
-	return qc;
-}
-
 /**
  *	ata_qc_free - free unused ata_queued_cmd
  *	@qc: Command to complete
@@ -4614,19 +4585,9 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag)
  */
 void ata_qc_free(struct ata_queued_cmd *qc)
 {
-	struct ata_port *ap;
-	unsigned int tag;
-
-	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
-	ap = qc->ap;
-
 	qc->flags = 0;
-	tag = qc->tag;
-	if (ata_tag_valid(tag)) {
+	if (ata_tag_valid(qc->tag))
 		qc->tag = ATA_TAG_POISON;
-		if (ap->flags & ATA_FLAG_SAS_HOST)
-			ata_sas_free_tag(tag, ap);
-	}
 }
 
 void __ata_qc_complete(struct ata_queued_cmd *qc)
@@ -5605,7 +5566,7 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops)
  *	Start and then freeze ports of @host.  Started status is
  *	recorded in host->flags, so this function can be called
  *	multiple times.  Ports are guaranteed to get started only
- *	once.  If host->ops isn't initialized yet, its set to the
+ *	once.  If host->ops is not initialized yet, it is set to the
  *	first non-dummy port ops.
  *
  *	LOCKING:
@@ -6146,67 +6107,113 @@ int ata_platform_remove_one(struct platform_device *pdev)
 EXPORT_SYMBOL_GPL(ata_platform_remove_one);
 
 #ifdef CONFIG_ATA_FORCE
+
+#define force_cbl(name, flag)				\
+	{ #name,	.cbl		= (flag) }
+
+#define force_spd_limit(spd, val)			\
+	{ #spd,	.spd_limit		= (val) }
+
+#define force_xfer(mode, shift)				\
+	{ #mode,	.xfer_mask	= (1UL << (shift)) }
+
+#define force_lflag_on(name, flags)			\
+	{ #name,	.lflags_on	= (flags) }
+
+#define force_lflag_onoff(name, flags)			\
+	{ "no" #name,	.lflags_on	= (flags) },	\
+	{ #name,	.lflags_off	= (flags) }
+
+#define force_horkage_on(name, flag)			\
+	{ #name,	.horkage_on	= (flag) }
+
+#define force_horkage_onoff(name, flag)			\
+	{ "no" #name,	.horkage_on	= (flag) },	\
+	{ #name,	.horkage_off	= (flag) }
+
+static const struct ata_force_param force_tbl[] __initconst = {
+	force_cbl(40c,			ATA_CBL_PATA40),
+	force_cbl(80c,			ATA_CBL_PATA80),
+	force_cbl(short40c,		ATA_CBL_PATA40_SHORT),
+	force_cbl(unk,			ATA_CBL_PATA_UNK),
+	force_cbl(ign,			ATA_CBL_PATA_IGN),
+	force_cbl(sata,			ATA_CBL_SATA),
+
+	force_spd_limit(1.5Gbps,	1),
+	force_spd_limit(3.0Gbps,	2),
+
+	force_xfer(pio0,		ATA_SHIFT_PIO + 0),
+	force_xfer(pio1,		ATA_SHIFT_PIO + 1),
+	force_xfer(pio2,		ATA_SHIFT_PIO + 2),
+	force_xfer(pio3,		ATA_SHIFT_PIO + 3),
+	force_xfer(pio4,		ATA_SHIFT_PIO + 4),
+	force_xfer(pio5,		ATA_SHIFT_PIO + 5),
+	force_xfer(pio6,		ATA_SHIFT_PIO + 6),
+	force_xfer(mwdma0,		ATA_SHIFT_MWDMA + 0),
+	force_xfer(mwdma1,		ATA_SHIFT_MWDMA + 1),
+	force_xfer(mwdma2,		ATA_SHIFT_MWDMA + 2),
+	force_xfer(mwdma3,		ATA_SHIFT_MWDMA + 3),
+	force_xfer(mwdma4,		ATA_SHIFT_MWDMA + 4),
+	force_xfer(udma0,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma/16,		ATA_SHIFT_UDMA + 0),
+	force_xfer(udma1,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma/25,		ATA_SHIFT_UDMA + 1),
+	force_xfer(udma2,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma/33,		ATA_SHIFT_UDMA + 2),
+	force_xfer(udma3,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma/44,		ATA_SHIFT_UDMA + 3),
+	force_xfer(udma4,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma/66,		ATA_SHIFT_UDMA + 4),
+	force_xfer(udma5,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma/100,		ATA_SHIFT_UDMA + 5),
+	force_xfer(udma6,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma/133,		ATA_SHIFT_UDMA + 6),
+	force_xfer(udma7,		ATA_SHIFT_UDMA + 7),
+
+	force_lflag_on(nohrst,		ATA_LFLAG_NO_HRST),
+	force_lflag_on(nosrst,		ATA_LFLAG_NO_SRST),
+	force_lflag_on(norst,		ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST),
+	force_lflag_on(rstonce,		ATA_LFLAG_RST_ONCE),
+	force_lflag_onoff(dbdelay,	ATA_LFLAG_NO_DEBOUNCE_DELAY),
+
+	force_horkage_onoff(ncq,	ATA_HORKAGE_NONCQ),
+	force_horkage_onoff(ncqtrim,	ATA_HORKAGE_NO_NCQ_TRIM),
+	force_horkage_onoff(ncqati,	ATA_HORKAGE_NO_NCQ_ON_ATI),
+
+	force_horkage_onoff(trim,	ATA_HORKAGE_NOTRIM),
+	force_horkage_on(trim_zero,	ATA_HORKAGE_ZERO_AFTER_TRIM),
+	force_horkage_on(max_trim_128m, ATA_HORKAGE_MAX_TRIM_128M),
+
+	force_horkage_onoff(dma,	ATA_HORKAGE_NODMA),
+	force_horkage_on(atapi_dmadir,	ATA_HORKAGE_ATAPI_DMADIR),
+	force_horkage_on(atapi_mod16_dma, ATA_HORKAGE_ATAPI_MOD16_DMA),
+
+	force_horkage_onoff(dmalog,	ATA_HORKAGE_NO_DMA_LOG),
+	force_horkage_onoff(iddevlog,	ATA_HORKAGE_NO_ID_DEV_LOG),
+	force_horkage_onoff(logdir,	ATA_HORKAGE_NO_LOG_DIR),
+
+	force_horkage_on(max_sec_128,	ATA_HORKAGE_MAX_SEC_128),
+	force_horkage_on(max_sec_1024,	ATA_HORKAGE_MAX_SEC_1024),
+	force_horkage_on(max_sec_lba48,	ATA_HORKAGE_MAX_SEC_LBA48),
+
+	force_horkage_onoff(lpm,	ATA_HORKAGE_NOLPM),
+	force_horkage_onoff(setxfer,	ATA_HORKAGE_NOSETXFER),
+	force_horkage_on(dump_id,	ATA_HORKAGE_DUMP_ID),
+
+	force_horkage_on(disable,	ATA_HORKAGE_DISABLE),
+};
+
 static int __init ata_parse_force_one(char **cur,
 				      struct ata_force_ent *force_ent,
 				      const char **reason)
 {
-	static const struct ata_force_param force_tbl[] __initconst = {
-		{ "40c",	.cbl		= ATA_CBL_PATA40 },
-		{ "80c",	.cbl		= ATA_CBL_PATA80 },
-		{ "short40c",	.cbl		= ATA_CBL_PATA40_SHORT },
-		{ "unk",	.cbl		= ATA_CBL_PATA_UNK },
-		{ "ign",	.cbl		= ATA_CBL_PATA_IGN },
-		{ "sata",	.cbl		= ATA_CBL_SATA },
-		{ "1.5Gbps",	.spd_limit	= 1 },
-		{ "3.0Gbps",	.spd_limit	= 2 },
-		{ "noncq",	.horkage_on	= ATA_HORKAGE_NONCQ },
-		{ "ncq",	.horkage_off	= ATA_HORKAGE_NONCQ },
-		{ "noncqtrim",	.horkage_on	= ATA_HORKAGE_NO_NCQ_TRIM },
-		{ "ncqtrim",	.horkage_off	= ATA_HORKAGE_NO_NCQ_TRIM },
-		{ "noncqati",	.horkage_on	= ATA_HORKAGE_NO_NCQ_ON_ATI },
-		{ "ncqati",	.horkage_off	= ATA_HORKAGE_NO_NCQ_ON_ATI },
-		{ "dump_id",	.horkage_on	= ATA_HORKAGE_DUMP_ID },
-		{ "pio0",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 0) },
-		{ "pio1",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 1) },
-		{ "pio2",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 2) },
-		{ "pio3",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 3) },
-		{ "pio4",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 4) },
-		{ "pio5",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 5) },
-		{ "pio6",	.xfer_mask	= 1 << (ATA_SHIFT_PIO + 6) },
-		{ "mwdma0",	.xfer_mask	= 1 << (ATA_SHIFT_MWDMA + 0) },
-		{ "mwdma1",	.xfer_mask	= 1 << (ATA_SHIFT_MWDMA + 1) },
-		{ "mwdma2",	.xfer_mask	= 1 << (ATA_SHIFT_MWDMA + 2) },
-		{ "mwdma3",	.xfer_mask	= 1 << (ATA_SHIFT_MWDMA + 3) },
-		{ "mwdma4",	.xfer_mask	= 1 << (ATA_SHIFT_MWDMA + 4) },
-		{ "udma0",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 0) },
-		{ "udma16",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 0) },
-		{ "udma/16",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 0) },
-		{ "udma1",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 1) },
-		{ "udma25",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 1) },
-		{ "udma/25",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 1) },
-		{ "udma2",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 2) },
-		{ "udma33",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 2) },
-		{ "udma/33",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 2) },
-		{ "udma3",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 3) },
-		{ "udma44",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 3) },
-		{ "udma/44",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 3) },
-		{ "udma4",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 4) },
-		{ "udma66",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 4) },
-		{ "udma/66",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 4) },
-		{ "udma5",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 5) },
-		{ "udma100",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 5) },
-		{ "udma/100",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 5) },
-		{ "udma6",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 6) },
-		{ "udma133",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 6) },
-		{ "udma/133",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 6) },
-		{ "udma7",	.xfer_mask	= 1 << (ATA_SHIFT_UDMA + 7) },
-		{ "nohrst",	.lflags		= ATA_LFLAG_NO_HRST },
-		{ "nosrst",	.lflags		= ATA_LFLAG_NO_SRST },
-		{ "norst",	.lflags		= ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
-		{ "rstonce",	.lflags		= ATA_LFLAG_RST_ONCE },
-		{ "atapi_dmadir", .horkage_on	= ATA_HORKAGE_ATAPI_DMADIR },
-		{ "disable",	.horkage_on	= ATA_HORKAGE_DISABLE },
-	};
 	char *start = *cur, *p = *cur;
 	char *id, *val, *endp;
 	const struct ata_force_param *match_fp = NULL;
@@ -6288,7 +6295,7 @@ static void __init ata_parse_force_param(void)
 	int last_port = -1, last_device = -1;
 	char *p, *cur, *next;
 
-	/* calculate maximum number of params and allocate force_tbl */
+	/* Calculate maximum number of params and allocate ata_force_tbl */
 	for (p = ata_force_param_buf; *p; p++)
 		if (*p == ',')
 			size++;

drivers/ata/libata-sata.c

@@ -1268,31 +1268,6 @@ int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap)
 }
 EXPORT_SYMBOL_GPL(ata_sas_queuecmd);
 
-int ata_sas_allocate_tag(struct ata_port *ap)
-{
-	unsigned int max_queue = ap->host->n_tags;
-	unsigned int i, tag;
-
-	for (i = 0, tag = ap->sas_last_tag + 1; i < max_queue; i++, tag++) {
-		tag = tag < max_queue ? tag : 0;
-
-		/* the last tag is reserved for internal command. */
-		if (ata_tag_internal(tag))
-			continue;
-
-		if (!test_and_set_bit(tag, &ap->sas_tag_allocated)) {
-			ap->sas_last_tag = tag;
-			return tag;
-		}
-	}
-	return -1;
-}
-
-void ata_sas_free_tag(unsigned int tag, struct ata_port *ap)
-{
-	clear_bit(tag, &ap->sas_tag_allocated);
-}
-
 /**
  *	sata_async_notification - SATA async notification handler
  *	@ap: ATA port where async notification is received

drivers/ata/libata-scsi.c

@@ -638,24 +638,48 @@ EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
 static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev,
 					      struct scsi_cmnd *cmd)
 {
+	struct ata_port *ap = dev->link->ap;
 	struct ata_queued_cmd *qc;
+	int tag;
 
-	qc = ata_qc_new_init(dev, scsi_cmd_to_rq(cmd)->tag);
-	if (qc) {
-		qc->scsicmd = cmd;
-		qc->scsidone = scsi_done;
-
-		qc->sg = scsi_sglist(cmd);
-		qc->n_elem = scsi_sg_count(cmd);
+	if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
+		goto fail;
 
-		if (scsi_cmd_to_rq(cmd)->rq_flags & RQF_QUIET)
-			qc->flags |= ATA_QCFLAG_QUIET;
+	if (ap->flags & ATA_FLAG_SAS_HOST) {
+		/*
+		 * SAS hosts may queue > ATA_MAX_QUEUE commands so use
+		 * unique per-device budget token as a tag.
+		 */
+		if (WARN_ON_ONCE(cmd->budget_token >= ATA_MAX_QUEUE))
+			goto fail;
+		tag = cmd->budget_token;
 	} else {
-		cmd->result = (DID_OK << 16) | SAM_STAT_TASK_SET_FULL;
-		scsi_done(cmd);
+		tag = scsi_cmd_to_rq(cmd)->tag;
 	}
 
+	qc = __ata_qc_from_tag(ap, tag);
+	qc->tag = qc->hw_tag = tag;
+	qc->ap = ap;
+	qc->dev = dev;
+
+	ata_qc_reinit(qc);
+
+	qc->scsicmd = cmd;
+	qc->scsidone = scsi_done;
+
+	qc->sg = scsi_sglist(cmd);
+	qc->n_elem = scsi_sg_count(cmd);
+
+	if (scsi_cmd_to_rq(cmd)->rq_flags & RQF_QUIET)
+		qc->flags |= ATA_QCFLAG_QUIET;
+
 	return qc;
+
+fail:
+	set_host_byte(cmd, DID_OK);
+	set_status_byte(cmd, SAM_STAT_TASK_SET_FULL);
+	scsi_done(cmd);
+	return NULL;
 }
 
 static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)

drivers/ata/libata.h

@@ -44,7 +44,6 @@ static inline void ata_force_cbl(struct ata_port *ap) { }
 #endif
 extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
 extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
-extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag);
 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
 			   u64 block, u32 n_block, unsigned int tf_flags,
 			   unsigned int tag, int class);
@@ -91,18 +90,6 @@ extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
 
 #define to_ata_port(d) container_of(d, struct ata_port, tdev)
 
-/* libata-sata.c */
-#ifdef CONFIG_SATA_HOST
-int ata_sas_allocate_tag(struct ata_port *ap);
-void ata_sas_free_tag(unsigned int tag, struct ata_port *ap);
-#else
-static inline int ata_sas_allocate_tag(struct ata_port *ap)
-{
-	return -EOPNOTSUPP;
-}
-static inline void ata_sas_free_tag(unsigned int tag, struct ata_port *ap) { }
-#endif
-
 /* libata-acpi.c */
 #ifdef CONFIG_ATA_ACPI
 extern unsigned int ata_acpi_gtf_filter;

drivers/ata/pata_ftide010.c

@@ -536,8 +536,8 @@ static int pata_ftide010_probe(struct platform_device *pdev)
 	return 0;
 
 err_dis_clk:
-	if (!IS_ERR(ftide->pclk))
-		clk_disable_unprepare(ftide->pclk);
+	clk_disable_unprepare(ftide->pclk);
+
 	return ret;
 }
 
@@ -547,8 +547,7 @@ static int pata_ftide010_remove(struct platform_device *pdev)
 	struct ftide010 *ftide = host->private_data;
 
 	ata_host_detach(ftide->host);
-	if (!IS_ERR(ftide->pclk))
-		clk_disable_unprepare(ftide->pclk);
+	clk_disable_unprepare(ftide->pclk);
 
 	return 0;
 }

drivers/ata/pata_mpc52xx.c

@@ -19,11 +19,12 @@
 #include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/libata.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/types.h>
 
 #include <asm/cacheflush.h>
-#include <asm/prom.h>
 #include <asm/mpc52xx.h>
 
 #include <linux/fsl/bestcomm/bestcomm.h>

drivers/ata/pata_sil680.c

@@ -47,11 +47,9 @@
  *	criticial.
  */
 
-static unsigned long sil680_selreg(struct ata_port *ap, int r)
+static int sil680_selreg(struct ata_port *ap, int r)
 {
-	unsigned long base = 0xA0 + r;
-	base += (ap->port_no << 4);
-	return base;
+	return 0xA0 + (ap->port_no << 4) + r;
 }
 
 /**
@@ -65,12 +63,9 @@ static unsigned long sil680_selreg(struct ata_port *ap, int r)
  *	the unit shift.
  */
 
-static unsigned long sil680_seldev(struct ata_port *ap, struct ata_device *adev, int r)
+static int sil680_seldev(struct ata_port *ap, struct ata_device *adev, int r)
 {
-	unsigned long base = 0xA0 + r;
-	base += (ap->port_no << 4);
-	base |= adev->devno ? 2 : 0;
-	return base;
+	return 0xA0 + (ap->port_no << 4) + r + (adev->devno << 1);
 }
 
 
@@ -85,8 +80,9 @@ static unsigned long sil680_seldev(struct ata_port *ap, struct ata_device *adev,
 static int sil680_cable_detect(struct ata_port *ap)
 {
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-	unsigned long addr = sil680_selreg(ap, 0);
+	int addr = sil680_selreg(ap, 0);
 	u8 ata66;
+
 	pci_read_config_byte(pdev, addr, &ata66);
 	if (ata66 & 1)
 		return ATA_CBL_PATA80;
@@ -113,9 +109,9 @@ static void sil680_set_piomode(struct ata_port *ap, struct ata_device *adev)
 		0x328A, 0x2283, 0x1281, 0x10C3, 0x10C1
 	};
 
-	unsigned long tfaddr = sil680_selreg(ap, 0x02);
-	unsigned long addr = sil680_seldev(ap, adev, 0x04);
-	unsigned long addr_mask = 0x80 + 4 * ap->port_no;
+	int tfaddr = sil680_selreg(ap, 0x02);
+	int addr = sil680_seldev(ap, adev, 0x04);
+	int addr_mask = 0x80 + 4 * ap->port_no;
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	int pio = adev->pio_mode - XFER_PIO_0;
 	int lowest_pio = pio;
@@ -165,9 +161,9 @@ static void sil680_set_dmamode(struct ata_port *ap, struct ata_device *adev)
 	static const u16 dma_table[3] = { 0x2208, 0x10C2, 0x10C1 };
 
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-	unsigned long ma = sil680_seldev(ap, adev, 0x08);
-	unsigned long ua = sil680_seldev(ap, adev, 0x0C);
-	unsigned long addr_mask = 0x80 + 4 * ap->port_no;
+	int ma = sil680_seldev(ap, adev, 0x08);
+	int ua = sil680_seldev(ap, adev, 0x0C);
+	int addr_mask = 0x80 + 4 * ap->port_no;
 	int port_shift = adev->devno * 4;
 	u8 scsc, mode;
 	u16 multi, ultra;
@@ -219,7 +215,7 @@ static void sil680_sff_exec_command(struct ata_port *ap,
 static bool sil680_sff_irq_check(struct ata_port *ap)
 {
 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);
-	unsigned long addr	= sil680_selreg(ap, 1);
+	int addr		= sil680_selreg(ap, 1);
 	u8 val;
 
 	pci_read_config_byte(pdev, addr, &val);

drivers/ata/pata_via.c

@@ -248,9 +248,9 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev,
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 	struct ata_device *peer = ata_dev_pair(adev);
 	struct ata_timing t, p;
-	static int via_clock = 33333;	/* Bus clock in kHZ */
-	unsigned long T =  1000000000 / via_clock;
-	unsigned long UT = T;
+	const int via_clock = 33333;	/* Bus clock in kHz */
+	const int T = 1000000000 / via_clock;
+	int UT = T;
 	int ut;
 	int offset = 3 - (2*ap->port_no) - adev->devno;
 

drivers/ata/sata_gemini.c

@@ -318,7 +318,6 @@ static int gemini_sata_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	struct sata_gemini *sg;
 	struct regmap *map;
-	struct resource *res;
 	enum gemini_muxmode muxmode;
 	u32 gmode;
 	u32 gmask;
@@ -329,11 +328,7 @@ static int gemini_sata_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	sg->dev = dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
-	sg->base = devm_ioremap_resource(dev, res);
+	sg->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sg->base))
 		return PTR_ERR(sg->base);
 

include/linux/libata.h

@@ -820,7 +820,6 @@ struct ata_port {
 	unsigned int		cbl;	/* cable type; ATA_CBL_xxx */
 
 	struct ata_queued_cmd	qcmd[ATA_MAX_QUEUE + 1];
-	unsigned long		sas_tag_allocated; /* for sas tag allocation only */
 	u64			qc_active;
 	int			nr_active_links; /* #links with active qcs */
 	unsigned int		sas_last_tag;	/* track next tag hw expects */
@@ -1111,7 +1110,7 @@ extern void ata_unpack_xfermask(unsigned long xfer_mask,
 			unsigned long *udma_mask);
 extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
 extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
-extern int ata_xfer_mode2shift(unsigned long xfer_mode);
+extern int ata_xfer_mode2shift(u8 xfer_mode);
 extern const char *ata_mode_string(unsigned long xfer_mask);
 extern unsigned long ata_id_xfermask(const u16 *id);
 extern int ata_std_qc_defer(struct ata_queued_cmd *qc);