* [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess
@ 2019-02-13 13:53 Colin King
2019-02-14 5:54 ` Dan Carpenter
0 siblings, 1 reply; 7+ messages in thread
From: Colin King @ 2019-02-13 13:53 UTC (permalink / raw)
To: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The null check on pointer sess and the subsequent call is redundant
as sess is null on all the the paths that lead to the out_term2 label.
Hence the null check and the call can be removed.
Detected by CoverityScan, CID#1420663 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 6b8c655d9eb4..9af329a5ed90 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -6396,8 +6396,6 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
return;
out_term2:
- if (sess)
- ha->tgt.tgt_ops->put_sess(sess);
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
out_term:
qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
--
2.20.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess
2019-02-13 13:53 [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess Colin King
@ 2019-02-14 5:54 ` Dan Carpenter
0 siblings, 0 replies; 7+ messages in thread
From: Dan Carpenter @ 2019-02-14 5:54 UTC (permalink / raw)
To: Colin King
Cc: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi, kernel-janitors, linux-kernel
On Wed, Feb 13, 2019 at 01:53:35PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The null check on pointer sess and the subsequent call is redundant
> as sess is null on all the the paths that lead to the out_term2 label.
> Hence the null check and the call can be removed.
>
> Detected by CoverityScan, CID#1420663 ("Logically dead code")
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/scsi/qla2xxx/qla_target.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
> index 6b8c655d9eb4..9af329a5ed90 100644
> --- a/drivers/scsi/qla2xxx/qla_target.c
> +++ b/drivers/scsi/qla2xxx/qla_target.c
> @@ -6396,8 +6396,6 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
> return;
>
> out_term2:
> - if (sess)
> - ha->tgt.tgt_ops->put_sess(sess);
Several places do:
sess = NULL;
goto out_term2;
We could remove the "sess = NULL;" because it's not required now.
> spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
> out_term:
> qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
regards,
dan carpenter
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess
@ 2019-02-14 5:54 ` Dan Carpenter
0 siblings, 0 replies; 7+ messages in thread
From: Dan Carpenter @ 2019-02-14 5:54 UTC (permalink / raw)
To: Colin King
Cc: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi, kernel-janitors, linux-kernel
On Wed, Feb 13, 2019 at 01:53:35PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The null check on pointer sess and the subsequent call is redundant
> as sess is null on all the the paths that lead to the out_term2 label.
> Hence the null check and the call can be removed.
>
> Detected by CoverityScan, CID#1420663 ("Logically dead code")
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/scsi/qla2xxx/qla_target.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
> index 6b8c655d9eb4..9af329a5ed90 100644
> --- a/drivers/scsi/qla2xxx/qla_target.c
> +++ b/drivers/scsi/qla2xxx/qla_target.c
> @@ -6396,8 +6396,6 @@ static void qlt_tmr_work(struct qla_tgt *tgt,
> return;
>
> out_term2:
> - if (sess)
> - ha->tgt.tgt_ops->put_sess(sess);
Several places do:
sess = NULL;
goto out_term2;
We could remove the "sess = NULL;" because it's not required now.
> spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
> out_term:
> qlt_send_term_exchange(ha->base_qpair, NULL, &prm->tm_iocb2, 1, 0);
regards,
dan carpenter
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH] scsi: qla2xxx: remove redundant assignment to pointer host
2019-02-13 13:53 [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess Colin King
@ 2019-09-05 13:42 ` Colin King
0 siblings, 0 replies; 7+ messages in thread
From: Colin King @ 2019-09-05 13:42 UTC (permalink / raw)
To: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The pointer host is being initialized with a value that is never read
and is being re-assigned a little later on. The assignment is
redundant and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 0ffda6171614..584f45a7be2f 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -463,7 +463,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
case IMMED_NOTIFY_TYPE:
{
- struct scsi_qla_host *host = vha;
+ struct scsi_qla_host *host;
struct imm_ntfy_from_isp *entry =
(struct imm_ntfy_from_isp *)pkt;
--
2.20.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH] scsi: qla2xxx: remove redundant assignment to pointer host
@ 2019-09-05 13:42 ` Colin King
0 siblings, 0 replies; 7+ messages in thread
From: Colin King @ 2019-09-05 13:42 UTC (permalink / raw)
To: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The pointer host is being initialized with a value that is never read
and is being re-assigned a little later on. The assignment is
redundant and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 0ffda6171614..584f45a7be2f 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -463,7 +463,7 @@ void qlt_response_pkt_all_vps(struct scsi_qla_host *vha,
case IMMED_NOTIFY_TYPE:
{
- struct scsi_qla_host *host = vha;
+ struct scsi_qla_host *host;
struct imm_ntfy_from_isp *entry (struct imm_ntfy_from_isp *)pkt;
--
2.20.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] scsi: qla2xxx: remove redundant assignment to pointer host
2019-09-05 13:42 ` Colin King
@ 2019-10-01 2:41 ` Martin K. Petersen
-1 siblings, 0 replies; 7+ messages in thread
From: Martin K. Petersen @ 2019-10-01 2:41 UTC (permalink / raw)
To: Colin King
Cc: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi, kernel-janitors, linux-kernel
Colin,
> The pointer host is being initialized with a value that is never read
> and is being re-assigned a little later on. The assignment is
> redundant and hence can be removed.
Applied to 5.5/scsi-queue, thanks!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] scsi: qla2xxx: remove redundant assignment to pointer host
@ 2019-10-01 2:41 ` Martin K. Petersen
0 siblings, 0 replies; 7+ messages in thread
From: Martin K. Petersen @ 2019-10-01 2:41 UTC (permalink / raw)
To: Colin King
Cc: qla2xxx-upstream, James E . J . Bottomley, Martin K . Petersen,
linux-scsi, kernel-janitors, linux-kernel
Colin,
> The pointer host is being initialized with a value that is never read
> and is being re-assigned a little later on. The assignment is
> redundant and hence can be removed.
Applied to 5.5/scsi-queue, thanks!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2019-10-01 2:41 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2019-09-05 13:42 [PATCH] scsi: qla2xxx: remove redundant assignment to pointer host Colin King
2019-09-05 13:42 ` Colin King
2019-10-01 2:41 ` Martin K. Petersen
2019-10-01 2:41 ` Martin K. Petersen
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2019-02-13 13:53 [PATCH] scsi: qla2xxx: remove redundant null check on pointer sess Colin King
2019-02-14 5:54 ` Dan Carpenter
2019-02-14 5:54 ` Dan Carpenter
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