[SCSI] lpfc 8.3.44: Fixed IO hang when in msi mode.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

2 files changed, 20 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index b2ede05a5f0a..0b08188598cd 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -4782,6 +4782,24 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
                                   &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
         if (err) {
                 atomic_dec(&ndlp->cmd_pending);
+                lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
+                                 "3376 FCP could not issue IOCB err %x"
+                                 "FCP cmd x%x <%d/%d> "
+                                 "sid: x%x did: x%x oxid: x%x "
+                                 "Data: x%x x%x x%x x%x\n",
+                                 err, cmnd->cmnd[0],
+                                 cmnd->device ? cmnd->device->id : 0xffff,
+                                 cmnd->device ? cmnd->device->lun : 0xffff,
+                                 vport->fc_myDID, ndlp->nlp_DID,
+                                 phba->sli_rev == LPFC_SLI_REV4 ?
+                                 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
+                                 lpfc_cmd->cur_iocbq.iocb.ulpContext,
+                                 lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
+                                 lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
+                                 (uint32_t)
+                                 (cmnd->request->timeout / 1000));
+
+
                 goto out_host_busy_free_buf;
         }
         if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 8f580fda443f..838e5b991851 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -8032,7 +8032,8 @@ lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba)
         struct lpfc_vector_map_info *cpup;
         int chann, cpu;
 
-        if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU) {
+        if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU
+            && phba->cfg_fcp_io_channel > 1) {
                 cpu = smp_processor_id();
                 if (cpu < phba->sli4_hba.num_present_cpu) {
                         cpup = phba->sli4_hba.cpu_map;