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: (37 commits)
  [SCSI] zfcp: fix double dbf id usage
  [SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev
  [SCSI] zfcp: fix erp list usage without using locks
  [SCSI] zfcp: prevent fc_remote_port_delete calls for unregistered rport
  [SCSI] zfcp: fix deadlock caused by shared work queue tasks
  [SCSI] zfcp: put threshold data in hba trace
  [SCSI] zfcp: Simplify zfcp data structures
  [SCSI] zfcp: Simplify get_adapter_by_busid
  [SCSI] zfcp: remove all typedefs and replace them with standards
  [SCSI] zfcp: attach and release SAN nameserver port on demand
  [SCSI] zfcp: remove unused references, declarations and flags
  [SCSI] zfcp: Update message with input from review
  [SCSI] zfcp: add queue_full sysfs attribute
  [SCSI] scsi_dh: suppress comparison warning
  [SCSI] scsi_dh: add Dell product information into rdac device handler
  [SCSI] qla2xxx: remove the unused SCSI_QLOGIC_FC_FIRMWARE option
  [SCSI] qla2xxx: fix printk format warnings
  [SCSI] qla2xxx: Update version number to 8.02.01-k8.
  [SCSI] qla2xxx: Ignore payload reserved-bits during RSCN processing.
  [SCSI] qla2xxx: Additional residual-count corrections during UNDERRUN handling.
  ...

1 files changed, 30 insertions, 9 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index e7686500e9dd..98ee55ced592 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1250,6 +1250,7 @@ int scsi_prep_state_check(struct scsi_device *sdev, struct request *req)
                         break;
                 case SDEV_QUIESCE:
                 case SDEV_BLOCK:
+                case SDEV_CREATED_BLOCK:
                         /*
                          * If the devices is blocked we defer normal commands.
                          */
@@ -2073,10 +2074,13 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 
         switch (state) {
         case SDEV_CREATED:
-                /* There are no legal states that come back to
-                 * created.  This is the manually initialised start
-                 * state */
-                goto illegal;
+                switch (oldstate) {
+                case SDEV_CREATED_BLOCK:
+                        break;
+                default:
+                        goto illegal;
+                }
+                break;
                         
         case SDEV_RUNNING:
                 switch (oldstate) {
@@ -2114,8 +2118,17 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 
         case SDEV_BLOCK:
                 switch (oldstate) {
-                case SDEV_CREATED:
                 case SDEV_RUNNING:
+                case SDEV_CREATED_BLOCK:
+                        break;
+                default:
+                        goto illegal;
+                }
+                break;
+
+        case SDEV_CREATED_BLOCK:
+                switch (oldstate) {
+                case SDEV_CREATED:
                         break;
                 default:
                         goto illegal;
@@ -2403,8 +2416,12 @@ scsi_internal_device_block(struct scsi_device *sdev)
         int err = 0;
 
         err = scsi_device_set_state(sdev, SDEV_BLOCK);
-        if (err)
-                return err;
+        if (err) {
+                err = scsi_device_set_state(sdev, SDEV_CREATED_BLOCK);
+
+                if (err)
+                        return err;
+        }
 
         /* 
          * The device has transitioned to SDEV_BLOCK.  Stop the
@@ -2447,8 +2464,12 @@ scsi_internal_device_unblock(struct scsi_device *sdev)
          * and goose the device queue if successful.  
          */
         err = scsi_device_set_state(sdev, SDEV_RUNNING);
-        if (err)
-                return err;
+        if (err) {
+                err = scsi_device_set_state(sdev, SDEV_CREATED);
+
+                if (err)
+                        return err;
+        }
 
         spin_lock_irqsave(q->queue_lock, flags);
         blk_start_queue(q);