From: Colin Ian King <colin.king@canonical.com>
Date: Fri, 13 Jul 2018 09:39:54 +0100
Subject: [PATCH] scsi: lpfc: remove null check on nvmebuf
Git-commit: cc74e31d4147f26ead6ea06e4649d63a14edc0fe
Patch-Mainline: v4.19-rc1
References: bsc#1148308
The null checks on nvmebuf are redundant as nvmebuf is always obtained from
a container_of() and hence can never be null. Remove all the redundant null
checks. This also cleans up a static analysis warning.
Detected by CoverityScan, CID#1471753 ("Dereference before null check")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/scsi/lpfc/lpfc_nvmet.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index 22f8a204b69f..b766afe10d3d 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -1745,7 +1745,7 @@ lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
oxid = be16_to_cpu(fc_hdr->fh_ox_id);
- if (!nvmebuf || !phba->targetport) {
+ if (!phba->targetport) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6154 LS Drop IO x%x\n", oxid);
oxid = 0;
@@ -1770,8 +1770,7 @@ lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
lpfc_nvmeio_data(phba, "NVMET LS DROP: "
"xri x%x sz %d from %06x\n",
oxid, size, sid);
- if (nvmebuf)
- lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
return;
}
ctxp->phba = phba;
@@ -1814,8 +1813,7 @@ lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
ctxp->oxid, rc);
/* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
- if (nvmebuf)
- lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
atomic_inc(&tgtp->xmt_ls_abort);
lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
--
2.16.4