Merge commit 'origin' into devel

3 files changed, 23 insertions, 61 deletions

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 7cd05b599a12..b0e5ac372a32 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -236,12 +236,12 @@ static void sas_ata_phy_reset(struct ata_port *ap)
         struct domain_device *dev = ap->private_data;
         struct sas_internal *i =
                 to_sas_internal(dev->port->ha->core.shost->transportt);
-        int res = 0;
+        int res = TMF_RESP_FUNC_FAILED;
 
         if (i->dft->lldd_I_T_nexus_reset)
                 res = i->dft->lldd_I_T_nexus_reset(dev);
 
-        if (res)
+        if (res != TMF_RESP_FUNC_COMPLETE)
                 SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __FUNCTION__);
 
         switch (dev->sata_dev.command_set) {
@@ -656,21 +656,6 @@ out:
         return res;
 }
 
-static void sas_sata_propagate_sas_addr(struct domain_device *dev)
-{
-        unsigned long flags;
-        struct asd_sas_port *port = dev->port;
-        struct asd_sas_phy  *phy;
-
-        BUG_ON(dev->parent);
-
-        memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
-        spin_lock_irqsave(&port->phy_list_lock, flags);
-        list_for_each_entry(phy, &port->phy_list, port_phy_el)
-                memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
-        spin_unlock_irqrestore(&port->phy_list_lock, flags);
-}
-
 #define ATA_IDENTIFY_DEV         0xEC
 #define ATA_IDENTIFY_PACKET_DEV  0xA1
 #define ATA_SET_FEATURES         0xEF
@@ -728,26 +713,6 @@ static int sas_discover_sata_dev(struct domain_device *dev)
                         goto out_err;
         }
 cont1:
-        /* Get WWN */
-        if (dev->port->oob_mode != SATA_OOB_MODE) {
-                memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
-                       SAS_ADDR_SIZE);
-        } else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
-                   (le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
-                   == 0x5000) {
-                int i;
-
-                for (i = 0; i < 4; i++) {
-                        dev->sas_addr[2*i] =
-             (le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0xFF00) >> 8;
-                        dev->sas_addr[2*i+1] =
-              le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0x00FF;
-                }
-        }
-        sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
-        if (!dev->parent)
-                sas_sata_propagate_sas_addr(dev);
-
         /* XXX Hint: register this SATA device with SATL.
            When this returns, dev->sata_dev->lu is alive and
            present.
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c
index e1e2d085c920..39ae68a3b0ef 100644
--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -92,9 +92,6 @@ static void sas_form_port(struct asd_sas_phy *phy)
         if (!port->phy)
                 port->phy = phy->phy;
 
-        SAS_DPRINTK("phy%d added to port%d, phy_mask:0x%x\n", phy->id,
-                    port->id, port->phy_mask);
-
         if (*(u64 *)port->attached_sas_addr == 0) {
                 port->class = phy->class;
                 memcpy(port->attached_sas_addr, phy->attached_sas_addr,
@@ -115,6 +112,11 @@ static void sas_form_port(struct asd_sas_phy *phy)
         }
         sas_port_add_phy(port->port, phy->phy);
 
+        SAS_DPRINTK("%s added to %s, phy_mask:0x%x (%16llx)\n",
+                    phy->phy->dev.bus_id,port->port->dev.bus_id,
+                    port->phy_mask,
+                    SAS_ADDR(port->attached_sas_addr));
+
         if (port->port_dev)
                 port->port_dev->pathways = port->num_phys;
 
@@ -255,12 +257,11 @@ void sas_porte_hard_reset(struct work_struct *work)
 static void sas_init_port(struct asd_sas_port *port,
                           struct sas_ha_struct *sas_ha, int i)
 {
+        memset(port, 0, sizeof(*port));
         port->id = i;
         INIT_LIST_HEAD(&port->dev_list);
         spin_lock_init(&port->phy_list_lock);
         INIT_LIST_HEAD(&port->phy_list);
-        port->num_phys = 0;
-        port->phy_mask = 0;
         port->ha = sas_ha;
 
         spin_lock_init(&port->dev_list_lock);
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 704ea06a6e50..1f8241563c6c 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -434,7 +434,7 @@ static int sas_recover_I_T(struct domain_device *dev)
 }
 
 /* Find the sas_phy that's attached to this device */
-static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
+struct sas_phy *sas_find_local_phy(struct domain_device *dev)
 {
         struct domain_device *pdev = dev->parent;
         struct ex_phy *exphy = NULL;
@@ -456,6 +456,7 @@ static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
         BUG_ON(!exphy);
         return exphy->phy;
 }
+EXPORT_SYMBOL_GPL(sas_find_local_phy);
 
 /* Attempt to send a LUN reset message to a device */
 int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)
@@ -482,7 +483,7 @@ int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)
 int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd)
 {
         struct domain_device *dev = cmd_to_domain_dev(cmd);
-        struct sas_phy *phy = find_local_sas_phy(dev);
+        struct sas_phy *phy = sas_find_local_phy(dev);
         int res;
 
         res = sas_phy_reset(phy, 1);
@@ -497,10 +498,10 @@ int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd)
 }
 
 /* Try to reset a device */
-static int try_to_reset_cmd_device(struct Scsi_Host *shost,
-                                   struct scsi_cmnd *cmd)
+static int try_to_reset_cmd_device(struct scsi_cmnd *cmd)
 {
         int res;
+        struct Scsi_Host *shost = cmd->device->host;
 
         if (!shost->hostt->eh_device_reset_handler)
                 goto try_bus_reset;
@@ -540,6 +541,12 @@ Again:
                 need_reset = task->task_state_flags & SAS_TASK_NEED_DEV_RESET;
                 spin_unlock_irqrestore(&task->task_state_lock, flags);
 
+                if (need_reset) {
+                        SAS_DPRINTK("%s: task 0x%p requests reset\n",
+                                    __FUNCTION__, task);
+                        goto reset;
+                }
+
                 SAS_DPRINTK("trying to find task 0x%p\n", task);
                 res = sas_scsi_find_task(task);
 
@@ -550,18 +557,15 @@ Again:
                         SAS_DPRINTK("%s: task 0x%p is done\n", __FUNCTION__,
                                     task);
                         sas_eh_finish_cmd(cmd);
-                        if (need_reset)
-                                try_to_reset_cmd_device(shost, cmd);
                         continue;
                 case TASK_IS_ABORTED:
                         SAS_DPRINTK("%s: task 0x%p is aborted\n",
                                     __FUNCTION__, task);
                         sas_eh_finish_cmd(cmd);
-                        if (need_reset)
-                                try_to_reset_cmd_device(shost, cmd);
                         continue;
                 case TASK_IS_AT_LU:
                         SAS_DPRINTK("task 0x%p is at LU: lu recover\n", task);
+ reset:
                         tmf_resp = sas_recover_lu(task->dev, cmd);
                         if (tmf_resp == TMF_RESP_FUNC_COMPLETE) {
                                 SAS_DPRINTK("dev %016llx LU %x is "
@@ -569,8 +573,6 @@ Again:
                                             SAS_ADDR(task->dev),
                                             cmd->device->lun);
                                 sas_eh_finish_cmd(cmd);
-                                if (need_reset)
-                                        try_to_reset_cmd_device(shost, cmd);
                                 sas_scsi_clear_queue_lu(work_q, cmd);
                                 goto Again;
                         }
@@ -581,15 +583,15 @@ Again:
                                     task);
                         tmf_resp = sas_recover_I_T(task->dev);
                         if (tmf_resp == TMF_RESP_FUNC_COMPLETE) {
+                                struct domain_device *dev = task->dev;
                                 SAS_DPRINTK("I_T %016llx recovered\n",
                                             SAS_ADDR(task->dev->sas_addr));
                                 sas_eh_finish_cmd(cmd);
-                                if (need_reset)
-                                        try_to_reset_cmd_device(shost, cmd);
-                                sas_scsi_clear_queue_I_T(work_q, task->dev);
+                                sas_scsi_clear_queue_I_T(work_q, dev);
                                 goto Again;
                         }
                         /* Hammer time :-) */
+                        try_to_reset_cmd_device(cmd);
                         if (i->dft->lldd_clear_nexus_port) {
                                 struct asd_sas_port *port = task->dev->port;
                                 SAS_DPRINTK("clearing nexus for port:%d\n",
@@ -599,8 +601,6 @@ Again:
                                         SAS_DPRINTK("clear nexus port:%d "
                                                     "succeeded\n", port->id);
                                         sas_eh_finish_cmd(cmd);
-                                        if (need_reset)
-                                                try_to_reset_cmd_device(shost, cmd);
                                         sas_scsi_clear_queue_port(work_q,
                                                                   port);
                                         goto Again;
@@ -613,8 +613,6 @@ Again:
                                         SAS_DPRINTK("clear nexus ha "
                                                     "succeeded\n");
                                         sas_eh_finish_cmd(cmd);
-                                        if (need_reset)
-                                                try_to_reset_cmd_device(shost, cmd);
                                         goto clear_q;
                                 }
                         }
@@ -628,8 +626,6 @@ Again:
                                     cmd->device->lun);
 
                         sas_eh_finish_cmd(cmd);
-                        if (need_reset)
-                                try_to_reset_cmd_device(shost, cmd);
                         goto clear_q;
                 }
         }