Merge tag 'trace-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...

[linux-2.6-microblaze.git] / drivers / scsi / scsi_transport_fc.c

diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 892fbd9..ba9d70f 100644 (file)
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3276,8 +3276,8 @@ fc_scsi_scan_rport(struct work_struct *work)
 }
 
 /**
- * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport
- * @cmnd: SCSI command that scsi_eh is trying to recover
+ * fc_block_rport() - Block SCSI eh thread for blocked fc_rport.
+ * @rport: Remote port that scsi_eh is trying to recover.
  *
  * This routine can be called from a FC LLD scsi_eh callback. It
  * blocks the scsi_eh thread until the fc_rport leaves the
@@ -3289,10 +3289,9 @@ fc_scsi_scan_rport(struct work_struct *work)
  *         FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be
  *         passed back to scsi_eh.
  */
-int fc_block_scsi_eh(struct scsi_cmnd *cmnd)
+int fc_block_rport(struct fc_rport *rport)
 {
-       struct Scsi_Host *shost = cmnd->device->host;
-       struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
+       struct Scsi_Host *shost = rport_to_shost(rport);
        unsigned long flags;
 
        spin_lock_irqsave(shost->host_lock, flags);
@@ -3309,6 +3308,28 @@ int fc_block_scsi_eh(struct scsi_cmnd *cmnd)
 
        return 0;
 }
+EXPORT_SYMBOL(fc_block_rport);
+
+/**
+ * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport
+ * @cmnd: SCSI command that scsi_eh is trying to recover
+ *
+ * This routine can be called from a FC LLD scsi_eh callback. It
+ * blocks the scsi_eh thread until the fc_rport leaves the
+ * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is
+ * necessary to avoid the scsi_eh failing recovery actions for blocked
+ * rports which would lead to offlined SCSI devices.
+ *
+ * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED.
+ *         FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be
+ *         passed back to scsi_eh.
+ */
+int fc_block_scsi_eh(struct scsi_cmnd *cmnd)
+{
+       struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
+
+       return fc_block_rport(rport);
+}
 EXPORT_SYMBOL(fc_block_scsi_eh);
 
 /**
@@ -3550,7 +3571,7 @@ fc_vport_sched_delete(struct work_struct *work)
 static enum blk_eh_timer_return
 fc_bsg_job_timeout(struct request *req)
 {
-       struct bsg_job *job = (void *) req->special;
+       struct bsg_job *job = blk_mq_rq_to_pdu(req);
        struct Scsi_Host *shost = fc_bsg_to_shost(job);
        struct fc_rport *rport = fc_bsg_to_rport(job);
        struct fc_internal *i = to_fc_internal(shost->transportt);
@@ -3763,7 +3784,8 @@ fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
        snprintf(bsg_name, sizeof(bsg_name),
                 "fc_host%d", shost->host_no);
 
-       q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, i->f->dd_bsg_size);
+       q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, i->f->dd_bsg_size,
+                       NULL);
        if (IS_ERR(q)) {
                dev_err(dev,
                        "fc_host%d: bsg interface failed to initialize - setup queue\n",
@@ -3808,7 +3830,8 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
        if (!i->f->bsg_request)
                return -ENOTSUPP;
 
-       q = bsg_setup_queue(dev, NULL, fc_bsg_dispatch, i->f->dd_bsg_size);
+       q = bsg_setup_queue(dev, NULL, fc_bsg_dispatch, i->f->dd_bsg_size,
+                       NULL);
        if (IS_ERR(q)) {
                dev_err(dev, "failed to setup bsg queue\n");
                return PTR_ERR(q);