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Message-ID: <20151204175731.GA9185@bblock-ThinkPad-W530>
Date: Fri, 4 Dec 2015 18:57:31 +0100
From: Benjamin Block <bblock@...ux.vnet.ibm.com>
To: SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Steffen Maier <maier@...ux.vnet.ibm.com>,
linux-s390@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org,
Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] SCSI-zfcp: Delete unnecessary checks before the function
call "mempool_destroy"
Hej Markus,
On 14:23 Mon 16 Nov , SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Mon, 16 Nov 2015 14:19:03 +0100
>
> The mempool_destroy() function tests whether its argument is NULL
> and then returns immediately. Thus the test around the calls is not needed.
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
> 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 c00ac46..abc9c93 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);
> }
>
> /**
> --
> 2.6.2
Looks good to me, will have to wait though till Steffen is back around.
Reviewed-by: Benjamin Block <bblock@...ux.vnet.ibm.com>
Beste Grüße / Best regards,
- Benjamin Block
--
Linux on z Systems Development / IBM Systems & Technology Group
IBM Deutschland Research & Development GmbH
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