[PATCH v2 11/13] lpfc: Fix NULL pointer reference when resetting adapter

[James Smart]

Points referencing local port structures didn't accommodate cases
where the localport may not be registered yet.

Add NULL pointer checks to logic.

Signed-off-by: Dick Kennedy <dick.kenn...@broadcom.com>
Signed-off-by: James Smart <james.sm...@broadcom.com>
Reviewed-by: Hannes Reinecke <h...@suse.com>
---
 drivers/scsi/lpfc/lpfc_nvme.c | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index a0257478b63c..9e0345697e1b 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -364,16 +364,18 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdwqe,
        struct lpfc_dmabuf *buf_ptr;
        struct lpfc_nodelist *ndlp;
 
-       lport = (struct lpfc_nvme_lport *)vport->localport->private;
        pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
        status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
 
-       if (lport) {
-               atomic_inc(&lport->fc4NvmeLsCmpls);
-               if (status) {
-                       if (bf_get(lpfc_wcqe_c_xb, wcqe))
-                               atomic_inc(&lport->cmpl_ls_xb);
-                       atomic_inc(&lport->cmpl_ls_err);
+       if (vport->localport) {
+               lport = (struct lpfc_nvme_lport *)vport->localport->private;
+               if (lport) {
+                       atomic_inc(&lport->fc4NvmeLsCmpls);
+                       if (status) {
+                               if (bf_get(lpfc_wcqe_c_xb, wcqe))
+                                       atomic_inc(&lport->cmpl_ls_xb);
+                               atomic_inc(&lport->cmpl_ls_err);
+                       }
                }
        }
 
@@ -980,15 +982,17 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct 
lpfc_iocbq *pwqeIn,
        rport = lpfc_ncmd->nrport;
        status = bf_get(lpfc_wcqe_c_status, wcqe);
 
-       lport = (struct lpfc_nvme_lport *)vport->localport->private;
-       if (lport) {
-               idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
-               cstat = &lport->cstat[idx];
-               atomic_inc(&cstat->fc4NvmeIoCmpls);
-               if (status) {
-                       if (bf_get(lpfc_wcqe_c_xb, wcqe))
-                               atomic_inc(&lport->cmpl_fcp_xb);
-                       atomic_inc(&lport->cmpl_fcp_err);
+       if (vport->localport) {
+               lport = (struct lpfc_nvme_lport *)vport->localport->private;
+               if (lport) {
+                       idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
+                       cstat = &lport->cstat[idx];
+                       atomic_inc(&cstat->fc4NvmeIoCmpls);
+                       if (status) {
+                               if (bf_get(lpfc_wcqe_c_xb, wcqe))
+                                       atomic_inc(&lport->cmpl_fcp_xb);
+                               atomic_inc(&lport->cmpl_fcp_err);
+                       }
                }
        }
 
-- 
2.13.1