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* [PATCH] scsi: lpfc: Fix a condition in lpfc_dmp_dbg()
@ 2020-07-09 10:49 Dan Carpenter
  2020-07-09 10:56 ` Dan Carpenter
  0 siblings, 1 reply; 4+ messages in thread
From: Dan Carpenter @ 2020-07-09 10:49 UTC (permalink / raw)
  To: James Smart, Dick Kennedy
  Cc: James E.J. Bottomley, Martin K. Petersen, linux-scsi, kernel-janitors

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

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-07-09 14:43 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-09 10:49 [PATCH] scsi: lpfc: Fix a condition in lpfc_dmp_dbg() Dan Carpenter
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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