From patchwork Thu Nov 8 14:44:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steffen Maier X-Patchwork-Id: 10674431 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 03E4A15E9 for ; Thu, 8 Nov 2018 14:46:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E73B82BB61 for ; Thu, 8 Nov 2018 14:46:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DBAE02DD63; Thu, 8 Nov 2018 14:46:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 80A282BB61 for ; Thu, 8 Nov 2018 14:46:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726987AbeKIAVy (ORCPT ); Thu, 8 Nov 2018 19:21:54 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47376 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726847AbeKIAVx (ORCPT ); Thu, 8 Nov 2018 19:21:53 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wA8EjvXh060379 for ; Thu, 8 Nov 2018 09:46:04 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2nmnmwcrca-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 08 Nov 2018 09:46:01 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 8 Nov 2018 14:45:32 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wA8EjUVf55967956 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 8 Nov 2018 14:45:30 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F47952050; Thu, 8 Nov 2018 14:45:30 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 392985204E; Thu, 8 Nov 2018 14:45:30 +0000 (GMT) From: Steffen Maier To: "James E . J . Bottomley" , "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-s390@vger.kernel.org, Benjamin Block , Martin Schwidefsky , Heiko Carstens , Steffen Maier , zhong jiang Subject: [PATCH 02/22] zfcp: remove unnecessary null pointer check before mempool_destroy Date: Thu, 8 Nov 2018 15:44:37 +0100 X-Mailer: git-send-email 2.16.4 In-Reply-To: <20181108144458.29012-1-maier@linux.ibm.com> References: <20181108144458.29012-1-maier@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18110814-0028-0000-0000-00000316D5C0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18110814-0029-0000-0000-000023D32930 Message-Id: <20181108144458.29012-3-maier@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-11-08_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=956 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1811080126 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: zhong jiang mempool_destroy has taken null pointer check into account. so remove the redundant check. Signed-off-by: zhong jiang Acked-by: Benjamin Block [maier@linux.ibm.com: depends on v4.3 4e3ca3e033d1 ("mm/mempool: allow NULL `pool' pointer in mempool_destroy()")] Signed-off-by: Steffen Maier Reviewed-by: Hannes Reinecke --- 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 08cdc00e8299..8818a3a290f6 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -251,20 +251,13 @@ 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); } /**