[SCSI] lpfc 8.1.1 : Adjust use of scsi_block_requests and interaction w/ FC transport

- Remove unnecessary scsi_block_requests calls on rport deletes.
  This was deadlocking the sdev removals as they wanted to flush commands.
- No longer block requests when adding the remote port (to block
  discovery). Instead, register, then change port role. Maps to Qlogic
  behavior, and closer to the register-node-upon-first-ELS behavior.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 259eeb1..a1f751e 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -1017,12 +1017,7 @@ lpfc_register_remote_port(struct lpfc_hba * phba,
        rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
        rport_ids.port_id = ndlp->nlp_DID;
        rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
-       if (ndlp->nlp_type & NLP_FCP_TARGET)
-               rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
-       if (ndlp->nlp_type & NLP_FCP_INITIATOR)
-               rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
 
-       scsi_block_requests(phba->host);
        ndlp->rport = rport = fc_remote_port_add(phba->host, 0, &rport_ids);
        if (!rport) {
                dev_printk(KERN_WARNING, &phba->pcidev->dev,
@@ -1039,7 +1034,16 @@ lpfc_register_remote_port(struct lpfc_hba * phba,
        }
        rdata = rport->dd_data;
        rdata->pnode = ndlp;
-       scsi_unblock_requests(phba->host);
+
+       if (ndlp->nlp_type & NLP_FCP_TARGET)
+               rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
+       if (ndlp->nlp_type & NLP_FCP_INITIATOR)
+               rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
+
+
+       if (rport_ids.roles !=  FC_RPORT_ROLE_UNKNOWN)
+               fc_remote_port_rolechg(rport, rport_ids.roles);
+
 
        return;
 }
@@ -1053,9 +1057,7 @@ lpfc_unregister_remote_port(struct lpfc_hba * phba,
 
        ndlp->rport = NULL;
        rdata->pnode = NULL;
-       scsi_block_requests(phba->host);
        fc_remote_port_delete(rport);
-       scsi_unblock_requests(phba->host);
 
        return;
 }