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

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] stex: switch to block timeout
  [SCSI] make scsi_eh_try_stu use block timeout
  [SCSI] megaraid_sas: switch to block timeout
  [SCSI] ibmvscsi: switch to block timeout
  [SCSI] aacraid: switch to block timeout
  [SCSI] zfcp: prevent double decrement on host_busy while being busy
  [SCSI] zfcp: fix deadlock between wq triggered port scan and ERP
  [SCSI] zfcp: eliminate race between validation and locking
  [SCSI] zfcp: verify for correct rport state before scanning for SCSI devs
  [SCSI] zfcp: returning an ERR_PTR where a NULL value is expected
  [SCSI] zfcp: Fix opening of wka ports
  [SCSI] zfcp: fix remote port status check
  [SCSI] fc_transport: fix old bug on bitflag definitions
  [SCSI] Fix hang in starved list processing

6 files changed, 18 insertions, 19 deletions

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 9aa301c1ed0..162cd927d94 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -427,8 +427,8 @@ static int aac_slave_configure(struct scsi_device *sdev)
 		 * Firmware has an individual device recovery time typically
 		 * of 35 seconds, give us a margin.
 		 */
-		if (sdev->timeout < (45 * HZ))
-			sdev->timeout = 45 * HZ;
+		if (sdev->request_queue->rq_timeout < (45 * HZ))
+			blk_queue_rq_timeout(sdev->request_queue, 45*HZ);
 		for (cid = 0; cid < aac->maximum_num_containers; ++cid)
 			if (aac->fsa_dev[cid].valid)
 				++num_lsu;
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 87e09f35d3d..6cad1758243 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -1442,7 +1442,7 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev)
 	spin_lock_irqsave(shost->host_lock, lock_flags);
 	if (sdev->type == TYPE_DISK) {
 		sdev->allow_restart = 1;
-		sdev->timeout = 60 * HZ;
+		blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
 	}
 	scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun);
 	spin_unlock_irqrestore(shost->host_lock, lock_flags);
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index a454f94623d..17ce7abe17e 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -1016,7 +1016,8 @@ static int megasas_slave_configure(struct scsi_device *sdev)
 	 * The RAID firmware may require extended timeouts.
 	 */
 	if (sdev->channel >= MEGASAS_MAX_PD_CHANNELS)
-		sdev->timeout = MEGASAS_DEFAULT_CMD_TIMEOUT * HZ;
+		blk_queue_rq_timeout(sdev->request_queue,
+				     MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
 	return 0;
 }
 
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 386361778eb..edfaf241c5b 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -932,8 +932,7 @@ static int scsi_eh_try_stu(struct scsi_cmnd *scmd)
 		int i, rtn = NEEDS_RETRY;
 
 		for (i = 0; rtn == NEEDS_RETRY && i < 2; i++)
-			rtn = scsi_send_eh_cmnd(scmd, stu_command, 6,
-						scmd->device->timeout, 0);
+			rtn = scsi_send_eh_cmnd(scmd, stu_command, 6, scmd->device->request_queue->rq_timeout, 0);
 
 		if (rtn == SUCCESS)
 			return 0;
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index f5d3b96890d..fa45a1a6686 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -567,15 +567,18 @@ static inline int scsi_host_is_busy(struct Scsi_Host *shost)
  */
 static void scsi_run_queue(struct request_queue *q)
 {
-	struct scsi_device *starved_head = NULL, *sdev = q->queuedata;
+	struct scsi_device *sdev = q->queuedata;
 	struct Scsi_Host *shost = sdev->host;
+	LIST_HEAD(starved_list);
 	unsigned long flags;
 
 	if (scsi_target(sdev)->single_lun)
 		scsi_single_lun_run(sdev);
 
 	spin_lock_irqsave(shost->host_lock, flags);
-	while (!list_empty(&shost->starved_list) && !scsi_host_is_busy(shost)) {
+	list_splice_init(&shost->starved_list, &starved_list);
+
+	while (!list_empty(&starved_list)) {
 		int flagset;
 
 		/*
@@ -588,24 +591,18 @@ static void scsi_run_queue(struct request_queue *q)
 		 * scsi_request_fn must get the host_lock before checking
 		 * or modifying starved_list or starved_entry.
 		 */
-		sdev = list_entry(shost->starved_list.next,
-					  struct scsi_device, starved_entry);
-		/*
-		 * The *queue_ready functions can add a device back onto the
-		 * starved list's tail, so we must check for a infinite loop.
-		 */
-		if (sdev == starved_head)
+		if (scsi_host_is_busy(shost))
 			break;
-		if (!starved_head)
-			starved_head = sdev;
 
+		sdev = list_entry(starved_list.next,
+				  struct scsi_device, starved_entry);
+		list_del_init(&sdev->starved_entry);
 		if (scsi_target_is_busy(scsi_target(sdev))) {
 			list_move_tail(&sdev->starved_entry,
 				       &shost->starved_list);
 			continue;
 		}
 
-		list_del_init(&sdev->starved_entry);
 		spin_unlock(shost->host_lock);
 
 		spin_lock(sdev->request_queue->queue_lock);
@@ -621,6 +618,8 @@ static void scsi_run_queue(struct request_queue *q)
 
 		spin_lock(shost->host_lock);
 	}
+	/* put any unprocessed entries back */
+	list_splice(&starved_list, &shost->starved_list);
 	spin_unlock_irqrestore(shost->host_lock, flags);
 
 	blk_run_queue(q);
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 3790906a77d..2fa830c0be2 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -477,7 +477,7 @@ stex_slave_config(struct scsi_device *sdev)
 {
 	sdev->use_10_for_rw = 1;
 	sdev->use_10_for_ms = 1;
-	sdev->timeout = 60 * HZ;
+	blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
 	sdev->tagged_supported = 1;
 
 	return 0;