From patchwork Thu Feb 11 18:57:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 12083897 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 748C6C433E6 for ; Thu, 11 Feb 2021 19:08:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4276E64DCE for ; Thu, 11 Feb 2021 19:08:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231268AbhBKTAw (ORCPT ); Thu, 11 Feb 2021 14:00:52 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:29794 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231670AbhBKS6i (ORCPT ); Thu, 11 Feb 2021 13:58:38 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 11BIhAO0078117; Thu, 11 Feb 2021 13:57:53 -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=8kTbrLGlf8MA3D7L6G0QxsDD//LZvEzGEWGY/qYcNIM=; b=srD9dPBAIrm4jLM8WP2mO9eDRUXm8KGH06Oy+4iHcoBK9ZAUbS4++xNBHP05x/0MSXCH GRToiPAxngepQ2+WfEel9BP987nrvb2IZCD+HujY1g+0FO/cKCtpLKvNw6LJfe0x+B1d 6/wbf0qxh7NuhoQBbDn41vpTtF6MaUx5LFay8TbFvzl1pFM/W+f+pS9zIozy0CP755an ybfWD2QvN6LK1nsY3wlDFfUHgKki1cNqI9IvcRzJvzIZRsYi9JvxYM8AC1HYo7Ajy3l2 a/E3fM7dPjTZsENGrelGkFnG3iAi8zLHLQ9PkSayJpYxy7ZGTFH1Auht3K7j8DlTis72 pg== Received: from ppma01wdc.us.ibm.com (fd.55.37a9.ip4.static.sl-reverse.com [169.55.85.253]) by mx0a-001b2d01.pphosted.com with ESMTP id 36na3wgak3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 11 Feb 2021 13:57:53 -0500 Received: from pps.filterd (ppma01wdc.us.ibm.com [127.0.0.1]) by ppma01wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 11BIvpCi014204; Thu, 11 Feb 2021 18:57:51 GMT Received: from b03cxnp07029.gho.boulder.ibm.com (b03cxnp07029.gho.boulder.ibm.com [9.17.130.16]) by ppma01wdc.us.ibm.com with ESMTP id 36hjr9qskp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 11 Feb 2021 18:57:49 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 11BIvktX22348076 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 11 Feb 2021 18:57:46 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 34330136055; Thu, 11 Feb 2021 18:57:46 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DC72C136053; Thu, 11 Feb 2021 18:57:45 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 11 Feb 2021 18:57:45 +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 3/4] ibmvfc: treat H_CLOSED as success during sub-CRQ registration Date: Thu, 11 Feb 2021 12:57:41 -0600 Message-Id: <20210211185742.50143-4-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210211185742.50143-1-tyreld@linux.ibm.com> References: <20210211185742.50143-1-tyreld@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-11_07:2021-02-11,2021-02-11 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 phishscore=0 bulkscore=0 mlxscore=0 spamscore=0 malwarescore=0 clxscore=1015 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102110146 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: faacf8c5f1d5 ("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 3dd20f383453..ba6fcf9cbc57 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");