From patchwork Tue Mar 2 23:05:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 12113447 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B048C28E80 for ; Wed, 3 Mar 2021 13:06:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 681B460234 for ; Wed, 3 Mar 2021 13:06:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238128AbhCCMpf (ORCPT ); Wed, 3 Mar 2021 07:45:35 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:14570 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1840111AbhCBXHJ (ORCPT ); Tue, 2 Mar 2021 18:07:09 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 122N4LsN144564; Tue, 2 Mar 2021 18:06:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=XPxG3FFgPXal80lLQGs7HdzL8g2BGCEdUKlMKFxA35E=; b=frj05sTFNSV9IQoPI3MFMyWd24kPy+LTrSRDcIviNfMX8I0XBQKAnWyke3o/OGEF9LMs wguSOCmPWVrfjlxKRCrbUnKHvcWLbEs6iUwiyLrabOtLerVYhH2JOqcAULhiULw6lPHV xIs0ak0Lh4aGwMBCsfXN9VoUV7T7WGdjNwr0ylv+G1Q5+Cl2LUR1qzmDuUSMcPDDLEXx pXSXdHu6NFQZV4xkDxIyV6j+PkDCx0rxFIOl0hqR029VlF8QnOehCdG2OghCDsDvtfq/ SCglV0KfhGCXFtUlrX7oFomCx2mycnkNaFFAOQv6NhbiDb8OXSaB+Dvld0d4brWmc8UP JA== Received: from ppma01dal.us.ibm.com (83.d6.3fa9.ip4.static.sl-reverse.com [169.63.214.131]) by mx0a-001b2d01.pphosted.com with ESMTP id 371xp8g65n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Mar 2021 18:06:13 -0500 Received: from pps.filterd (ppma01dal.us.ibm.com [127.0.0.1]) by ppma01dal.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 122N2qSj020006; Tue, 2 Mar 2021 23:05:48 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma01dal.us.ibm.com with ESMTP id 371qmubfk2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Mar 2021 23:05:48 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 122N5kJc22937996 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 2 Mar 2021 23:05:46 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 62A436E050; Tue, 2 Mar 2021 23:05:46 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 044916E04C; Tue, 2 Mar 2021 23:05:46 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Tue, 2 Mar 2021 23:05:45 +0000 (GMT) From: Tyrel Datwyler To: james.bottomley@hansenpartnership.com Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, Tyrel Datwyler Subject: [PATCH v5 3/5] ibmvfc: treat H_CLOSED as success during sub-CRQ registration Date: Tue, 2 Mar 2021 17:05:41 -0600 Message-Id: <20210302230543.9905-4-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210302230543.9905-1-tyreld@linux.ibm.com> References: <20210302230543.9905-1-tyreld@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-03-02_08:2021-03-01,2021-03-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 spamscore=0 suspectscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2103020170 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org A non-zero return code for H_REG_SUB_CRQ is currently treated as a failure resulting in failing sub-CRQ setup. The case of H_CLOSED should not be treated as a failure. This return code translates to a successful sub-CRQ registration by the hypervisor, and is meant to communicate back that there is currently no partner VIOS CRQ connection established as of yet. This is a common occurrence during a disconnect where the client adapter can possibly come back up prior to the partner adapter. For non-zero return code from H_REG_SUB_CRQ treat a H_CLOSED as success so that sub-CRQs are successfully setup. Fixes: 3034ebe26389 ("ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels") Signed-off-by: Tyrel Datwyler Reviewed-by: Brian King --- drivers/scsi/ibmvscsi/ibmvfc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index d34e1a4f74d9..1d9f961715ca 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -5636,7 +5636,8 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost, rc = h_reg_sub_crq(vdev->unit_address, scrq->msg_token, PAGE_SIZE, &scrq->cookie, &scrq->hw_irq); - if (rc) { + /* H_CLOSED indicates successful register, but no CRQ partner */ + if (rc && rc != H_CLOSED) { dev_warn(dev, "Error registering sub-crq: %d\n", rc); if (rc == H_PARAMETER) dev_warn_once(dev, "Firmware may not support MQ\n");