Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (84 commits)
  [SCSI] be2iscsi: SGE Len == 64K
  [SCSI] be2iscsi: Remove premature free of cid
  [SCSI] be2iscsi: More time for FW
  [SCSI] libsas: fix bug for vacant phy
  [SCSI] sd: Fix overflow with big physical blocks
  [SCSI] st: add MTWEOFI to write filemarks without flushing drive buffer
  [SCSI] libsas: Don't issue commands to devices that have been hot-removed
  [SCSI] megaraid_sas: Add Online Controller Reset to MegaRAID SAS drive
  [SCSI] lpfc 8.3.17: Update lpfc driver version to 8.3.17
  [SCSI] lpfc 8.3.17: Replace function reset methodology
  [SCSI] lpfc 8.3.17: SCSI fixes
  [SCSI] lpfc 8.3.17: BSG fixes
  [SCSI] lpfc 8.3.17: SLI Additions and Fixes
  [SCSI] lpfc 8.3.17: Code Cleanup and Locking fixes
  [SCSI] zfcp: Remove scsi_cmnd->serial_number from debug traces
  [SCSI] ipr: fix array error logging
  [SCSI] aha152x: enable PCMCIA on 64bit
  [SCSI] scsi_dh_alua: Handle all states correctly
  [SCSI] cxgb4i: connection and ddp setting update
  [SCSI] cxgb3i: fixed connection over vlan
  ...

3 files changed, 21 insertions, 3 deletions

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 042153cbbde1..e1a395b438ee 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -162,6 +162,10 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
         unsigned int xfer = 0;
         unsigned int si;
 
+        /* If the device fell off, no sense in issuing commands */
+        if (dev->gone)
+                return AC_ERR_SYSTEM;
+
         task = sas_alloc_task(GFP_ATOMIC);
         if (!task)
                 return AC_ERR_SYSTEM;
@@ -347,6 +351,7 @@ static int sas_ata_scr_read(struct ata_link *link, unsigned int sc_reg_in,
 static struct ata_port_operations sas_sata_ops = {
         .phy_reset              = sas_ata_phy_reset,
         .post_internal_cmd      = sas_ata_post_internal,
+        .qc_defer               = ata_std_qc_defer,
         .qc_prep                = ata_noop_qc_prep,
         .qc_issue               = sas_ata_qc_issue,
         .qc_fill_rtf            = sas_ata_qc_fill_rtf,
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 83dd5070a15c..505ffe358293 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -175,10 +175,10 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id,
         switch (resp->result) {
         case SMP_RESP_PHY_VACANT:
                 phy->phy_state = PHY_VACANT;
-                return;
+                break;
         default:
                 phy->phy_state = PHY_NOT_PRESENT;
-                return;
+                break;
         case SMP_RESP_FUNC_ACC:
                 phy->phy_state = PHY_EMPTY; /* do not know yet */
                 break;
@@ -209,7 +209,10 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id,
         phy->phy->negotiated_linkrate = phy->linkrate;
 
         if (!rediscover)
-                sas_phy_add(phy->phy);
+                if (sas_phy_add(phy->phy)) {
+                        sas_phy_free(phy->phy);
+                        return;
+                }
 
         SAS_DPRINTK("ex %016llx phy%02d:%c attached: %016llx\n",
                     SAS_ADDR(dev->sas_addr), phy->phy_id,
@@ -1724,6 +1727,7 @@ static void sas_unregister_ex_tree(struct domain_device *dev)
         struct domain_device *child, *n;
 
         list_for_each_entry_safe(child, n, &ex->children, siblings) {
+                child->gone = 1;
                 if (child->dev_type == EDGE_DEV ||
                     child->dev_type == FANOUT_DEV)
                         sas_unregister_ex_tree(child);
@@ -1744,6 +1748,7 @@ static void sas_unregister_devs_sas_addr(struct domain_device *parent,
                         &ex_dev->children, siblings) {
                         if (SAS_ADDR(child->sas_addr) ==
                             SAS_ADDR(phy->attached_sas_addr)) {
+                                child->gone = 1;
                                 if (child->dev_type == EDGE_DEV ||
                                     child->dev_type == FANOUT_DEV)
                                         sas_unregister_ex_tree(child);
@@ -1752,6 +1757,7 @@ static void sas_unregister_devs_sas_addr(struct domain_device *parent,
                                 break;
                         }
                 }
+                parent->gone = 1;
                 sas_disable_routing(parent, phy->attached_sas_addr);
         }
         memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 535085cd27ec..55f09e92ab59 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -217,6 +217,13 @@ int sas_queuecommand(struct scsi_cmnd *cmd,
                         goto out;
                 }
 
+                /* If the device fell off, no sense in issuing commands */
+                if (dev->gone) {
+                        cmd->result = DID_BAD_TARGET << 16;
+                        scsi_done(cmd);
+                        goto out;
+                }
+
                 res = -ENOMEM;
                 task = sas_create_task(cmd, dev, GFP_ATOMIC);
                 if (!task)