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Groups > linux.kernel > #1717833

[PATCH] scsi: lpfc: remove useless code in lpfc_sli4_bsg_link_diag_test

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Remove variable assignments. The value stored in local variable _rc_ is
overwritten at line 2448:rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
before it can be used.

Addresses-Coverity-ID: 1226935
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
This issue was detected by Coverity and it was tested by compilation only.
Notice that this code has been there since 2011.

 drivers/scsi/lpfc/lpfc_bsg.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c
index a1686c2..fe9e1c0 100644
--- a/drivers/scsi/lpfc/lpfc_bsg.c
+++ b/drivers/scsi/lpfc/lpfc_bsg.c
@@ -2384,20 +2384,17 @@ lpfc_sli4_bsg_link_diag_test(struct bsg_job *job)
 		goto job_error;
 
 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
-	if (!pmboxq) {
-		rc = -ENOMEM;
+	if (!pmboxq)
 		goto link_diag_test_exit;
-	}
 
 	req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
 		   sizeof(struct lpfc_sli4_cfg_mhdr));
 	alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
 				     LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
 				     req_len, LPFC_SLI4_MBX_EMBED);
-	if (alloc_len != req_len) {
-		rc = -ENOMEM;
+	if (alloc_len != req_len)
 		goto link_diag_test_exit;
-	}
+
 	run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
 	bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
 	       phba->sli4_hba.lnk_info.lnk_no);
-- 
2.5.0

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[PATCH] scsi: lpfc: remove useless code in  lpfc_sli4_bsg_link_diag_test "Gustavo A. R. Silva" <gustavo@embeddedor.com> - 2017-08-22 23:00 +0200
  Re: [PATCH] scsi: lpfc: remove useless code in  lpfc_sli4_bsg_link_diag_test James Smart <james.smart@broadcom.com> - 2017-08-23 18:30 +0200
  Re: [PATCH] scsi: lpfc: remove useless code in lpfc_sli4_bsg_link_diag_test "Martin K. Petersen" <martin.petersen@oracle.com> - 2017-08-24 04:50 +0200
    Re: [PATCH] scsi: lpfc: remove useless code in  lpfc_sli4_bsg_link_diag_test "Gustavo A. R. Silva" <gustavo@embeddedor.com> - 2017-08-24 17:30 +0200

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