From: Dan Carpenter <dan.carpenter@oracle.com>
To: James Smart <james.smart@broadcom.com>,
Dick Kennedy <dick.kennedy@broadcom.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] scsi: lpfc: Fix a condition in lpfc_dmp_dbg()
Date: Thu, 09 Jul 2020 10:49:19 +0000 [thread overview]
Message-ID: <20200709104919.GD20875@mwanda> (raw)
These variables are unsigned so the result of the subtraction is also
unsigned and thus can't be negative. Change it to a comparison and
remove the subtraction.
Fixes: 372c187b8a70 ("scsi: lpfc: Add an internal trace log buffer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/scsi/lpfc/lpfc_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 7285b0114837..2bb2c96e7784 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -14152,7 +14152,7 @@ void lpfc_dmp_dbg(struct lpfc_hba *phba)
if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
} else {
- if ((start_idx - dbg_cnt) < 0) {
+ if (start_idx > dbg_cnt) {
start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
temp_idx = 0;
} else {
--
2.27.0
next reply other threads:[~2020-07-09 10:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 10:49 Dan Carpenter [this message]
2020-07-09 10:56 ` Dan Carpenter
2020-07-09 10:58 ` [PATCH v2] " Dan Carpenter
2020-07-09 14:43 ` James Smart
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