Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6

Documentation/scsi/00-INDEX

@@ -60,6 +60,8 @@ scsi.txt
 	- short blurb on using SCSI support as a module.
 scsi_mid_low_api.txt
 	- info on API between SCSI layer and low level drivers
+scsi_eh.txt
+	- info on SCSI midlayer error handling infrastructure
 st.txt
 	- info on scsi tape driver
 sym53c500_cs.txt

drivers/block/scsi_ioctl.c

@@ -123,6 +123,7 @@ static int verify_command(struct file *file, unsigned char *cmd)
 		safe_for_read(READ_12),
 		safe_for_read(READ_16),
 		safe_for_read(READ_BUFFER),
+		safe_for_read(READ_DEFECT_DATA),
 		safe_for_read(READ_LONG),
 		safe_for_read(INQUIRY),
 		safe_for_read(MODE_SENSE),

drivers/ieee1394/sbp2.c

@@ -790,7 +790,7 @@ static void sbp2_host_reset(struct hpsb_host *host)
 static int sbp2_start_device(struct scsi_id_instance_data *scsi_id)
 {
 	struct sbp2scsi_host_info *hi = scsi_id->hi;
-	struct scsi_device *sdev;
+	int error;
 
 	SBP2_DEBUG("sbp2_start_device");
 
@@ -939,10 +939,10 @@ alloc_fail:
 	sbp2_max_speed_and_size(scsi_id);
 
 	/* Add this device to the scsi layer now */
-	sdev = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0);
-	if (IS_ERR(sdev)) {
+	error = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0);
+	if (error) {
 		SBP2_ERR("scsi_add_device failed");
-		return PTR_ERR(sdev);
+		return error;
 	}
 
 	return 0;

drivers/scsi/3w-9xxx.c

@@ -59,6 +59,7 @@
                  Fix 'handled=1' ISR usage, remove bogus IRQ check.
                  Remove un-needed eh_abort handler.
                  Add support for embedded firmware error strings.
+   2.26.02.003 - Correctly handle single sgl's with use_sg=1.
 */
 
 #include <linux/module.h>
@@ -81,7 +82,7 @@
 #include "3w-9xxx.h"
 
 /* Globals */
-#define TW_DRIVER_VERSION "2.26.02.002"
+#define TW_DRIVER_VERSION "2.26.02.003"
 static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
 static unsigned int twa_device_extension_count;
 static int twa_major = -1;
@@ -1805,6 +1806,8 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
 			if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) {
 				command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id];
 				command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH;
+				if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)
+					memcpy(tw_dev->generic_buffer_virt[request_id], tw_dev->srb[request_id]->request_buffer, tw_dev->srb[request_id]->request_bufflen);
 			} else {
 				buffaddr = twa_map_scsi_single_data(tw_dev, request_id);
 				if (buffaddr == 0)
@@ -1823,6 +1826,12 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
 
 		if (tw_dev->srb[request_id]->use_sg > 0) {
 			if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) {
+				if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) {
+					struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+					char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+					memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length);
+					kunmap_atomic(buf - sg->offset, KM_IRQ0);
+				}
 				command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id];
 				command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH;
 			} else {
@@ -1888,11 +1897,20 @@ out:
 /* This function completes an execute scsi operation */
 static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id)
 {
-	/* Copy the response if too small */
-	if ((tw_dev->srb[request_id]->request_buffer) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) {
-		memcpy(tw_dev->srb[request_id]->request_buffer,
-		       tw_dev->generic_buffer_virt[request_id],
-		       tw_dev->srb[request_id]->request_bufflen);
+	if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH &&
+	    (tw_dev->srb[request_id]->sc_data_direction == DMA_FROM_DEVICE ||
+	     tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)) {
+		if (tw_dev->srb[request_id]->use_sg == 0) {
+			memcpy(tw_dev->srb[request_id]->request_buffer,
+			       tw_dev->generic_buffer_virt[request_id],
+			       tw_dev->srb[request_id]->request_bufflen);
+		}
+		if (tw_dev->srb[request_id]->use_sg == 1) {
+			struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer;
+			char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+			memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
+			kunmap_atomic(buf - sg->offset, KM_IRQ0);
+		}
 	}
 } /* End twa_scsiop_execute_scsi_complete() */
 

drivers/scsi/Kconfig

@@ -235,6 +235,13 @@ config SCSI_ISCSI_ATTRS
 	  each attached iSCSI device to sysfs, say Y.
 	  Otherwise, say N.
 
+config SCSI_SAS_ATTRS
+	tristate "SAS Transport Attributes"
+	depends on SCSI
+	help
+	  If you wish to export transport-specific information about
+	  each attached SAS device to sysfs, say Y.
+
 endmenu
 
 menu "SCSI low-level drivers"

drivers/scsi/Makefile

@@ -31,6 +31,7 @@ obj-$(CONFIG_RAID_ATTRS)	+= raid_class.o
 obj-$(CONFIG_SCSI_SPI_ATTRS)	+= scsi_transport_spi.o
 obj-$(CONFIG_SCSI_FC_ATTRS) 	+= scsi_transport_fc.o
 obj-$(CONFIG_SCSI_ISCSI_ATTRS)	+= scsi_transport_iscsi.o
+obj-$(CONFIG_SCSI_SAS_ATTRS)	+= scsi_transport_sas.o
 
 obj-$(CONFIG_SCSI_AMIGA7XX)	+= amiga7xx.o	53c7xx.o
 obj-$(CONFIG_A3000_SCSI)	+= a3000.o	wd33c93.o

drivers/scsi/lpfc/lpfc_attr.c

@@ -966,21 +966,21 @@ static void
 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
 {
 	struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
-	u64 nodename;
+	u64 node_name;
 
 	spin_lock_irq(shost->host_lock);
 
 	if ((phba->fc_flag & FC_FABRIC) ||
 	    ((phba->fc_topology == TOPOLOGY_LOOP) &&
 	     (phba->fc_flag & FC_PUBLIC_LOOP)))
-		memcpy(&nodename, &phba->fc_fabparam.nodeName, sizeof(u64));
+		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.wwn);
 	else
 		/* fabric is local port if there is no F/FL_Port */
-		memcpy(&nodename, &phba->fc_nodename, sizeof(u64));
+		node_name = wwn_to_u64(phba->fc_nodename.wwn);
 
 	spin_unlock_irq(shost->host_lock);
 
-	fc_host_fabric_name(shost) = be64_to_cpu(nodename);
+	fc_host_fabric_name(shost) = node_name;
 }
 
 
@@ -1103,21 +1103,20 @@ lpfc_get_starget_node_name(struct scsi_target *starget)
 {
 	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
 	struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
-	uint64_t node_name = 0;
+	u64 node_name = 0;
 	struct lpfc_nodelist *ndlp = NULL;
 
 	spin_lock_irq(shost->host_lock);
 	/* Search the mapped list for this target ID */
 	list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
 		if (starget->id == ndlp->nlp_sid) {
-			memcpy(&node_name, &ndlp->nlp_nodename,
-						sizeof(struct lpfc_name));
+			node_name = wwn_to_u64(ndlp->nlp_nodename.wwn);
 			break;
 		}
 	}
 	spin_unlock_irq(shost->host_lock);
 
-	fc_starget_node_name(starget) = be64_to_cpu(node_name);
+	fc_starget_node_name(starget) = node_name;
 }
 
 static void
@@ -1125,21 +1124,20 @@ lpfc_get_starget_port_name(struct scsi_target *starget)
 {
 	struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
 	struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
-	uint64_t port_name = 0;
+	u64 port_name = 0;
 	struct lpfc_nodelist *ndlp = NULL;
 
 	spin_lock_irq(shost->host_lock);
 	/* Search the mapped list for this target ID */
 	list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
 		if (starget->id == ndlp->nlp_sid) {
-			memcpy(&port_name, &ndlp->nlp_portname,
-						sizeof(struct lpfc_name));
+			port_name = wwn_to_u64(ndlp->nlp_portname.wwn);
 			break;
 		}
 	}
 	spin_unlock_irq(shost->host_lock);
 
-	fc_starget_port_name(starget) = be64_to_cpu(port_name);
+	fc_starget_port_name(starget) = port_name;
 }
 
 static void

drivers/scsi/lpfc/lpfc_hbadisc.c

@@ -1017,13 +1017,10 @@ lpfc_register_remote_port(struct lpfc_hba * phba,
 	struct fc_rport *rport;
 	struct lpfc_rport_data *rdata;
 	struct fc_rport_identifiers rport_ids;
-	uint64_t wwn;
 
 	/* Remote port has reappeared. Re-register w/ FC transport */
-	memcpy(&wwn, &ndlp->nlp_nodename, sizeof(uint64_t));
-	rport_ids.node_name = be64_to_cpu(wwn);
-	memcpy(&wwn, &ndlp->nlp_portname, sizeof(uint64_t));
-	rport_ids.port_name = be64_to_cpu(wwn);
+	rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.wwn);
+	rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.wwn);
 	rport_ids.port_id = ndlp->nlp_DID;
 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 	if (ndlp->nlp_type & NLP_FCP_TARGET)

drivers/scsi/lpfc/lpfc_hw.h

@@ -262,12 +262,14 @@ struct lpfc_sli_ct_request {
 #define FF_FRAME_SIZE     2048
 
 struct lpfc_name {
+	union {
+		struct {
 #ifdef __BIG_ENDIAN_BITFIELD
-	uint8_t nameType:4;	/* FC Word 0, bit 28:31 */
-	uint8_t IEEEextMsn:4;	/* FC Word 0, bit 24:27, bit 8:11 of IEEE ext */
+			uint8_t nameType:4;	/* FC Word 0, bit 28:31 */
+			uint8_t IEEEextMsn:4;	/* FC Word 0, bit 24:27, bit 8:11 of IEEE ext */
 #else	/*  __LITTLE_ENDIAN_BITFIELD */
-	uint8_t IEEEextMsn:4;	/* FC Word 0, bit 24:27, bit 8:11 of IEEE ext */
-	uint8_t nameType:4;	/* FC Word 0, bit 28:31 */
+			uint8_t IEEEextMsn:4;	/* FC Word 0, bit 24:27, bit 8:11 of IEEE ext */
+			uint8_t nameType:4;	/* FC Word 0, bit 28:31 */
 #endif
 
 #define NAME_IEEE           0x1	/* IEEE name - nameType */
@@ -276,8 +278,11 @@ struct lpfc_name {
 #define NAME_IP_TYPE        0x4	/* IP address */
 #define NAME_CCITT_TYPE     0xC
 #define NAME_CCITT_GR_TYPE  0xE
-	uint8_t IEEEextLsb;	/* FC Word 0, bit 16:23, IEEE extended Lsb */
-	uint8_t IEEE[6];	/* FC IEEE address */
+			uint8_t IEEEextLsb;	/* FC Word 0, bit 16:23, IEEE extended Lsb */
+			uint8_t IEEE[6];	/* FC IEEE address */
+		};
+		uint8_t wwn[8];
+	};
 };
 
 struct csp {

drivers/scsi/lpfc/lpfc_init.c

@@ -1333,7 +1333,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
 	unsigned long bar0map_len, bar2map_len;
 	int error = -ENODEV, retval;
 	int i;
-	u64 wwname;
 
 	if (pci_enable_device(pdev))
 		goto out;
@@ -1524,10 +1523,8 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
 	 * Must done after lpfc_sli_hba_setup()
 	 */
 
-	memcpy(&wwname, &phba->fc_nodename, sizeof(u64));
-	fc_host_node_name(host) = be64_to_cpu(wwname);
-	memcpy(&wwname, &phba->fc_portname, sizeof(u64));
-	fc_host_port_name(host) = be64_to_cpu(wwname);
+	fc_host_node_name(host) = wwn_to_u64(phba->fc_nodename.wwn);
+	fc_host_port_name(host) = wwn_to_u64(phba->fc_portname.wwn);
 	fc_host_supported_classes(host) = FC_COS_CLASS3;
 
 	memset(fc_host_supported_fc4s(host), 0,

drivers/scsi/qla2xxx/qla_attr.c

@@ -360,16 +360,16 @@ qla2x00_get_starget_node_name(struct scsi_target *starget)
 	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
 	scsi_qla_host_t *ha = to_qla_host(host);
 	fc_port_t *fcport;
-	uint64_t node_name = 0;
+	u64 node_name = 0;
 
 	list_for_each_entry(fcport, &ha->fcports, list) {
 		if (starget->id == fcport->os_target_id) {
-			node_name = *(uint64_t *)fcport->node_name;
+			node_name = wwn_to_u64(fcport->node_name);
 			break;
 		}
 	}
 
-	fc_starget_node_name(starget) = be64_to_cpu(node_name);
+	fc_starget_node_name(starget) = node_name;
 }
 
 static void
@@ -378,16 +378,16 @@ qla2x00_get_starget_port_name(struct scsi_target *starget)
 	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
 	scsi_qla_host_t *ha = to_qla_host(host);
 	fc_port_t *fcport;
-	uint64_t port_name = 0;
+	u64 port_name = 0;
 
 	list_for_each_entry(fcport, &ha->fcports, list) {
 		if (starget->id == fcport->os_target_id) {
-			port_name = *(uint64_t *)fcport->port_name;
+			port_name = wwn_to_u64(fcport->port_name);
 			break;
 		}
 	}
 
-	fc_starget_port_name(starget) = be64_to_cpu(port_name);
+	fc_starget_port_name(starget) = port_name;
 }
 
 static void
@@ -460,9 +460,7 @@ struct fc_function_template qla2xxx_transport_functions = {
 void
 qla2x00_init_host_attr(scsi_qla_host_t *ha)
 {
-	fc_host_node_name(ha->host) =
-	    be64_to_cpu(*(uint64_t *)ha->init_cb->node_name);
-	fc_host_port_name(ha->host) =
-	    be64_to_cpu(*(uint64_t *)ha->init_cb->port_name);
+	fc_host_node_name(ha->host) = wwn_to_u64(ha->init_cb->node_name);
+	fc_host_port_name(ha->host) = wwn_to_u64(ha->init_cb->port_name);
 	fc_host_supported_classes(ha->host) = FC_COS_CLASS3;
 }

drivers/scsi/qla2xxx/qla_init.c

@@ -2066,8 +2066,8 @@ qla2x00_reg_remote_port(scsi_qla_host_t *ha, fc_port_t *fcport)
 		return;
 	}
 
-	rport_ids.node_name = be64_to_cpu(*(uint64_t *)fcport->node_name);
-	rport_ids.port_name = be64_to_cpu(*(uint64_t *)fcport->port_name);
+	rport_ids.node_name = wwn_to_u64(fcport->node_name);
+	rport_ids.port_name = wwn_to_u64(fcport->port_name);
 	rport_ids.port_id = fcport->d_id.b.domain << 16 |
 	    fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;

drivers/scsi/scsi_priv.h

@@ -124,6 +124,7 @@ extern void scsi_sysfs_unregister(void);
 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 extern struct scsi_transport_template blank_transport_template;
+extern void __scsi_remove_device(struct scsi_device *);
 
 extern struct bus_type scsi_bus_type;
 

drivers/scsi/scsi_scan.c

@@ -870,8 +870,12 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
  out_free_sdev:
 	if (res == SCSI_SCAN_LUN_PRESENT) {
 		if (sdevp) {
-			scsi_device_get(sdev);
-			*sdevp = sdev;
+			if (scsi_device_get(sdev) == 0) {
+				*sdevp = sdev;
+			} else {
+				__scsi_remove_device(sdev);
+				res = SCSI_SCAN_NO_RESPONSE;
+			}
 		}
 	} else {
 		if (sdev->host->hostt->slave_destroy)
@@ -1260,6 +1264,19 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
 }
 EXPORT_SYMBOL(__scsi_add_device);
 
+int scsi_add_device(struct Scsi_Host *host, uint channel,
+		    uint target, uint lun)
+{
+	struct scsi_device *sdev = 
+		__scsi_add_device(host, channel, target, lun, NULL);
+	if (IS_ERR(sdev))
+		return PTR_ERR(sdev);
+
+	scsi_device_put(sdev);
+	return 0;
+}
+EXPORT_SYMBOL(scsi_add_device);
+
 void scsi_rescan_device(struct device *dev)
 {
 	struct scsi_driver *drv;
@@ -1276,27 +1293,8 @@ void scsi_rescan_device(struct device *dev)
 }
 EXPORT_SYMBOL(scsi_rescan_device);
 
-/**
- * scsi_scan_target - scan a target id, possibly including all LUNs on the
- *     target.
- * @sdevsca:	Scsi_Device handle for scanning
- * @shost:	host to scan
- * @channel:	channel to scan
- * @id:		target id to scan
- *
- * Description:
- *     Scan the target id on @shost, @channel, and @id. Scan at least LUN
- *     0, and possibly all LUNs on the target id.
- *
- *     Use the pre-allocated @sdevscan as a handle for the scanning. This
- *     function sets sdevscan->host, sdevscan->id and sdevscan->lun; the
- *     scanning functions modify sdevscan->lun.
- *
- *     First try a REPORT LUN scan, if that does not scan the target, do a
- *     sequential scan of LUNs on the target id.
- **/
-void scsi_scan_target(struct device *parent, unsigned int channel,
-		      unsigned int id, unsigned int lun, int rescan)
+static void __scsi_scan_target(struct device *parent, unsigned int channel,
+		unsigned int id, unsigned int lun, int rescan)
 {
 	struct Scsi_Host *shost = dev_to_shost(parent);
 	int bflags = 0;
@@ -1310,9 +1308,7 @@ void scsi_scan_target(struct device *parent, unsigned int channel,
 		 */
 		return;
 
-
 	starget = scsi_alloc_target(parent, channel, id);
-
 	if (!starget)
 		return;
 
@@ -1358,6 +1354,33 @@ void scsi_scan_target(struct device *parent, unsigned int channel,
 
 	put_device(&starget->dev);
 }
+
+/**
+ * scsi_scan_target - scan a target id, possibly including all LUNs on the
+ *     target.
+ * @parent:	host to scan
+ * @channel:	channel to scan
+ * @id:		target id to scan
+ * @lun:	Specific LUN to scan or SCAN_WILD_CARD
+ * @rescan:	passed to LUN scanning routines
+ *
+ * Description:
+ *     Scan the target id on @parent, @channel, and @id. Scan at least LUN 0,
+ *     and possibly all LUNs on the target id.
+ *
+ *     First try a REPORT LUN scan, if that does not scan the target, do a
+ *     sequential scan of LUNs on the target id.
+ **/
+void scsi_scan_target(struct device *parent, unsigned int channel,
+		      unsigned int id, unsigned int lun, int rescan)
+{
+	struct Scsi_Host *shost = dev_to_shost(parent);
+
+	down(&shost->scan_mutex);
+	if (scsi_host_scan_allowed(shost))
+		__scsi_scan_target(parent, channel, id, lun, rescan);
+	up(&shost->scan_mutex);
+}
 EXPORT_SYMBOL(scsi_scan_target);
 
 static void scsi_scan_channel(struct Scsi_Host *shost, unsigned int channel,
@@ -1383,10 +1406,12 @@ static void scsi_scan_channel(struct Scsi_Host *shost, unsigned int channel,
 				order_id = shost->max_id - id - 1;
 			else
 				order_id = id;
-			scsi_scan_target(&shost->shost_gendev, channel, order_id, lun, rescan);
+			__scsi_scan_target(&shost->shost_gendev, channel,
+					order_id, lun, rescan);
 		}
 	else
-		scsi_scan_target(&shost->shost_gendev, channel, id, lun, rescan);
+		__scsi_scan_target(&shost->shost_gendev, channel,
+				id, lun, rescan);
 }
 
 int scsi_scan_host_selected(struct Scsi_Host *shost, unsigned int channel,
@@ -1484,12 +1509,15 @@ void scsi_forget_host(struct Scsi_Host *shost)
  */
 struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost)
 {
-	struct scsi_device *sdev;
+	struct scsi_device *sdev = NULL;
 	struct scsi_target *starget;
 
+	down(&shost->scan_mutex);
+	if (!scsi_host_scan_allowed(shost))
+		goto out;
 	starget = scsi_alloc_target(&shost->shost_gendev, 0, shost->this_id);
 	if (!starget)
-		return NULL;
+		goto out;
 
 	sdev = scsi_alloc_sdev(starget, 0, NULL);
 	if (sdev) {
@@ -1497,6 +1525,8 @@ struct scsi_device *scsi_get_host_dev(struct Scsi_Host *shost)
 		sdev->borken = 0;
 	}
 	put_device(&starget->dev);
+ out:
+	up(&shost->scan_mutex);
 	return sdev;
 }
 EXPORT_SYMBOL(scsi_get_host_dev);

drivers/scsi/scsi_sysfs.c

@@ -653,7 +653,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 			error = attr_add(&sdev->sdev_gendev,
 					sdev->host->hostt->sdev_attrs[i]);
 			if (error) {
-				scsi_remove_device(sdev);
+				__scsi_remove_device(sdev);
 				goto out;
 			}
 		}
@@ -667,7 +667,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 							scsi_sysfs_sdev_attrs[i]);
 			error = device_create_file(&sdev->sdev_gendev, attr);
 			if (error) {
-				scsi_remove_device(sdev);
+				__scsi_remove_device(sdev);
 				goto out;
 			}
 		}
@@ -687,17 +687,10 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 	return error;
 }
 
-/**
- * scsi_remove_device - unregister a device from the scsi bus
- * @sdev:	scsi_device to unregister
- **/
-void scsi_remove_device(struct scsi_device *sdev)
+void __scsi_remove_device(struct scsi_device *sdev)
 {
-	struct Scsi_Host *shost = sdev->host;
-
-	down(&shost->scan_mutex);
 	if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
-		goto out;
+		return;
 
 	class_device_unregister(&sdev->sdev_classdev);
 	device_del(&sdev->sdev_gendev);
@@ -706,8 +699,17 @@ void scsi_remove_device(struct scsi_device *sdev)
 		sdev->host->hostt->slave_destroy(sdev);
 	transport_unregister_device(&sdev->sdev_gendev);
 	put_device(&sdev->sdev_gendev);
-out:
-	up(&shost->scan_mutex);
+}
+
+/**
+ * scsi_remove_device - unregister a device from the scsi bus
+ * @sdev:	scsi_device to unregister
+ **/
+void scsi_remove_device(struct scsi_device *sdev)
+{
+	down(&sdev->host->scan_mutex);
+	__scsi_remove_device(sdev);
+	up(&sdev->host->scan_mutex);
 }
 EXPORT_SYMBOL(scsi_remove_device);
 

drivers/scsi/sg.c

@@ -61,7 +61,7 @@ static int sg_version_num = 30533;	/* 2 digits for each component */
 
 #ifdef CONFIG_SCSI_PROC_FS
 #include <linux/proc_fs.h>
-static char *sg_version_date = "20050901";
+static char *sg_version_date = "20050908";
 
 static int sg_proc_init(void);
 static void sg_proc_cleanup(void);
@@ -1299,7 +1299,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
 		sg_rb_correct4mmap(rsv_schp, 1);	/* do only once per fd lifetime */
 		sfp->mmap_called = 1;
 	}
-	vma->vm_flags |= (VM_RESERVED | VM_IO);
+	vma->vm_flags |= VM_RESERVED;
 	vma->vm_private_data = sfp;
 	vma->vm_ops = &sg_mmap_vm_ops;
 	return 0;

include/scsi/scsi_device.h

@@ -178,8 +178,8 @@ static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
 
 extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
 		uint, uint, uint, void *hostdata);
-#define scsi_add_device(host, channel, target, lun) \
-	__scsi_add_device(host, channel, target, lun, NULL)
+extern int scsi_add_device(struct Scsi_Host *host, uint channel,
+			   uint target, uint lun);
 extern void scsi_remove_device(struct scsi_device *);
 extern int scsi_device_cancel(struct scsi_device *, int);
 

include/scsi/scsi_transport_fc.h

@@ -439,4 +439,12 @@ int fc_remote_port_block(struct fc_rport *rport);
 void fc_remote_port_unblock(struct fc_rport *rport);
 int scsi_is_fc_rport(const struct device *);
 
+static inline u64 wwn_to_u64(u8 *wwn)
+{
+	return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |
+	    (u64)wwn[2] << 40 | (u64)wwn[3] << 32 |
+	    (u64)wwn[4] << 24 | (u64)wwn[5] << 16 |
+	    (u64)wwn[6] <<  8 | (u64)wwn[7];
+}
+
 #endif /* SCSI_TRANSPORT_FC_H */

include/scsi/scsi_transport_sas.h

+#ifndef SCSI_TRANSPORT_SAS_H
+#define SCSI_TRANSPORT_SAS_H
+
+#include <linux/transport_class.h>
+#include <linux/types.h>
+
+struct scsi_transport_template;
+struct sas_rphy;
+
+
+enum sas_device_type {
+	SAS_PHY_UNUSED,
+	SAS_END_DEVICE,
+	SAS_EDGE_EXPANDER_DEVICE,
+	SAS_FANOUT_EXPANDER_DEVICE,
+};
+
+enum sas_protocol {
+	SAS_PROTOCOL_SATA		= 0x01,
+	SAS_PROTOCOL_SMP		= 0x02,
+	SAS_PROTOCOL_STP		= 0x04,
+	SAS_PROTOCOL_SSP		= 0x08,
+};
+
+enum sas_linkrate {
+	SAS_LINK_RATE_UNKNOWN,
+	SAS_PHY_DISABLED,
+	SAS_LINK_RATE_FAILED,
+	SAS_SATA_SPINUP_HOLD,
+	SAS_SATA_PORT_SELECTOR,
+	SAS_LINK_RATE_1_5_GBPS,
+	SAS_LINK_RATE_3_0_GBPS,
+	SAS_LINK_VIRTUAL,
+};
+
+struct sas_identify {
+	enum sas_device_type	device_type;
+	enum sas_protocol	initiator_port_protocols;
+	enum sas_protocol	target_port_protocols;
+	u64			sas_address;
+	u8			phy_identifier;
+};
+
+/* The functions by which the transport class and the driver communicate */
+struct sas_function_template {
+};
+
+struct sas_phy {
+	struct device		dev;
+	int			number;
+	struct sas_identify	identify;
+	enum sas_linkrate	negotiated_linkrate;
+	enum sas_linkrate	minimum_linkrate_hw;
+	enum sas_linkrate	minimum_linkrate;
+	enum sas_linkrate	maximum_linkrate_hw;
+	enum sas_linkrate	maximum_linkrate;
+	u8			port_identifier;
+	struct sas_rphy		*rphy;
+};
+
+#define dev_to_phy(d) \
+	container_of((d), struct sas_phy, dev)
+#define transport_class_to_phy(cdev) \
+	dev_to_phy((cdev)->dev)
+#define phy_to_shost(phy) \
+	dev_to_shost((phy)->dev.parent)
+
+struct sas_rphy {
+	struct device		dev;
+	struct sas_identify	identify;
+	struct list_head	list;
+	u32			scsi_target_id;
+};
+
+#define dev_to_rphy(d) \
+	container_of((d), struct sas_rphy, dev)
+#define transport_class_to_rphy(cdev) \
+	dev_to_rphy((cdev)->dev)
+#define rphy_to_shost(rphy) \
+	dev_to_shost((rphy)->dev.parent)
+
+extern void sas_remove_host(struct Scsi_Host *);
+
+extern struct sas_phy *sas_phy_alloc(struct device *, int);
+extern void sas_phy_free(struct sas_phy *);
+extern int sas_phy_add(struct sas_phy *);
+extern void sas_phy_delete(struct sas_phy *);
+extern int scsi_is_sas_phy(const struct device *);
+
+extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
+void sas_rphy_free(struct sas_rphy *);
+extern int sas_rphy_add(struct sas_rphy *);
+extern void sas_rphy_delete(struct sas_rphy *);
+extern int scsi_is_sas_rphy(const struct device *);
+
+extern struct scsi_transport_template *
+sas_attach_transport(struct sas_function_template *);
+extern void sas_release_transport(struct scsi_transport_template *);
+
+#endif /* SCSI_TRANSPORT_SAS_H */