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scsi: lpfc: remove null check on nvmebuf

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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>
This commit is contained in:
Colin Ian King 2018-07-13 09:39:54 +01:00 committed by Martin K. Petersen
parent a544523887
commit cc74e31d41
1 changed files with 3 additions and 5 deletions
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8
drivers/scsi/lpfc/lpfc_nvmet.c
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@ -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);