2018-09-08 09:55:25

by zhong jiang

Subject: [PATCH] s390: zfcp_aux: remove unnecessary null pointer check before mempool_destroy

mempool_destroy has taken null pointer check into account. so remove the
redundant check.

Signed-off-by: zhong jiang <[email protected]>
---
drivers/s390/scsi/zfcp_aux.c | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 94f4d8f..e06c3f2 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -248,20 +248,13 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)

static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
{
- if (adapter->pool.erp_req)
- mempool_destroy(adapter->pool.erp_req);
- if (adapter->pool.scsi_req)
- mempool_destroy(adapter->pool.scsi_req);
- if (adapter->pool.scsi_abort)
- mempool_destroy(adapter->pool.scsi_abort);
- if (adapter->pool.qtcb_pool)
- mempool_destroy(adapter->pool.qtcb_pool);
- if (adapter->pool.status_read_req)
- mempool_destroy(adapter->pool.status_read_req);
- if (adapter->pool.sr_data)
- mempool_destroy(adapter->pool.sr_data);
- if (adapter->pool.gid_pn)
- mempool_destroy(adapter->pool.gid_pn);
+ mempool_destroy(adapter->pool.erp_req);
+ mempool_destroy(adapter->pool.scsi_req);
+ mempool_destroy(adapter->pool.scsi_abort);
+ mempool_destroy(adapter->pool.qtcb_pool);
+ mempool_destroy(adapter->pool.status_read_req);
+ mempool_destroy(adapter->pool.sr_data);
+ mempool_destroy(adapter->pool.gid_pn);
}

/**
--
1.7.12.4

2018-09-10 06:24:31

by Benjamin Block

Subject: Re: [PATCH] s390: zfcp_aux: remove unnecessary null pointer check before mempool_destroy

On Sat, Sep 08, 2018 at 05:41:45PM +0800, zhong jiang wrote:
> mempool_destroy has taken null pointer check into account. so remove the
> redundant check.
>
> Signed-off-by: zhong jiang <[email protected]>
> ---
> drivers/s390/scsi/zfcp_aux.c | 21 +++++++--------------
> 1 file changed, 7 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
> index 94f4d8f..e06c3f2 100644
> --- a/drivers/s390/scsi/zfcp_aux.c
> +++ b/drivers/s390/scsi/zfcp_aux.c
> @@ -248,20 +248,13 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
>
> static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
> {
> - if (adapter->pool.erp_req)
> - mempool_destroy(adapter->pool.erp_req);
> - if (adapter->pool.scsi_req)
> - mempool_destroy(adapter->pool.scsi_req);
> - if (adapter->pool.scsi_abort)
> - mempool_destroy(adapter->pool.scsi_abort);
> - if (adapter->pool.qtcb_pool)
> - mempool_destroy(adapter->pool.qtcb_pool);
> - if (adapter->pool.status_read_req)
> - mempool_destroy(adapter->pool.status_read_req);
> - if (adapter->pool.sr_data)
> - mempool_destroy(adapter->pool.sr_data);
> - if (adapter->pool.gid_pn)
> - mempool_destroy(adapter->pool.gid_pn);
> + mempool_destroy(adapter->pool.erp_req);
> + mempool_destroy(adapter->pool.scsi_req);
> + mempool_destroy(adapter->pool.scsi_abort);
> + mempool_destroy(adapter->pool.qtcb_pool);
> + mempool_destroy(adapter->pool.status_read_req);
> + mempool_destroy(adapter->pool.sr_data);
> + mempool_destroy(adapter->pool.gid_pn);
> }
>

Acked-by: Benjamin Block <[email protected]>

Thank you. We'll send it along when we next send patches upstream.

--
With Best Regards, Benjamin Block / Linux on IBM Z Kernel Development
IBM Systems & Technology Group / IBM Deutschland Research & Development GmbH
Vorsitz. AufsR.: Martina Koederitz / Gesch?ftsf?hrung: Dirk Wittkopp
Sitz der Gesellschaft: B?blingen / Registergericht: AmtsG Stuttgart, HRB 243294

2018-09-10 06:37:22

by Martin Schwidefsky

Subject: Re: [PATCH] s390: zfcp_aux: remove unnecessary null pointer check before mempool_destroy

On Sat, 8 Sep 2018 17:41:45 +0800
zhong jiang <[email protected]> wrote:

> mempool_destroy has taken null pointer check into account. so remove the
> redundant check.
>
> Signed-off-by: zhong jiang <[email protected]>
> ---
> drivers/s390/scsi/zfcp_aux.c | 21 +++++++--------------
> 1 file changed, 7 insertions(+), 14 deletions(-)

Applied to linux-390:features. Thanks.

--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.