From patchwork Thu Feb 25 20:48:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 387508 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 6F626C433E6 for ; Thu, 25 Feb 2021 20:52:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 340D364E24 for ; Thu, 25 Feb 2021 20:52:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234143AbhBYUwL (ORCPT ); Thu, 25 Feb 2021 15:52:11 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:17970 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234055AbhBYUt6 (ORCPT ); Thu, 25 Feb 2021 15:49:58 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 11PKYvO8163004; Thu, 25 Feb 2021 15:49:12 -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=J0uWTrHIk6oNTIWtgvGVHPADCf5iJCgm2AKv0bC8II0=; b=V266Lxg6SBijbWxiM6j1k7DW3FsdkzqwLh6nvq1+JX1zdQSJDK/7nl0xbbLSHGQa/nlb wllVfHEC+6nCZBZbFiMflOhQ4uirdIZ8jJFYXeIXTTGhW1943gdFdj2wRFIt4Ux+/9ye vxy8pdpU1oZMhrxShj7FNQZ1CHAyDPrb1M/SusFCYWH1J4HKJ1+3RGtHs8CqDApVKolL 8xgn1N4r/3AljjeohPNhBW3vbGHA9EAD35lMnh+rjkammZxbSOZDJxBbDQ/5AoNU0xw5 h5VoBdL5gVyhlZgCw3dizjQvTj2hxujgXu9GrDmHWXRYpw5JOOlGwwKPmTQxLHGSKh8r vQ== Received: from ppma04dal.us.ibm.com (7a.29.35a9.ip4.static.sl-reverse.com [169.53.41.122]) by mx0b-001b2d01.pphosted.com with ESMTP id 36xgksvmm6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Feb 2021 15:49:12 -0500 Received: from pps.filterd (ppma04dal.us.ibm.com [127.0.0.1]) by ppma04dal.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 11PKnARX023403; Thu, 25 Feb 2021 20:49:12 GMT Received: from b03cxnp08028.gho.boulder.ibm.com (b03cxnp08028.gho.boulder.ibm.com [9.17.130.20]) by ppma04dal.us.ibm.com with ESMTP id 36tt2b3tqm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Feb 2021 20:49:12 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 11PKmSfM37224930 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Feb 2021 20:48:28 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 56AFF6E050; Thu, 25 Feb 2021 20:48:28 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 09BD76E054; Thu, 25 Feb 2021 20:48:28 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Feb 2021 20:48:27 +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 v2 4/5] ibmvfc: store return code of H_FREE_SUB_CRQ during cleanup Date: Thu, 25 Feb 2021 14:48:23 -0600 Message-Id: <20210225204824.14570-5-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210225204824.14570-1-tyreld@linux.ibm.com> References: <20210225204824.14570-1-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=2021-02-25_11:2021-02-24,2021-02-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxscore=0 malwarescore=0 lowpriorityscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 adultscore=0 clxscore=1015 impostorscore=0 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102250158 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The H_FREE_SUB_CRQ hypercall can return a retry delay return code that indicates the call needs to be retried after a specific amount of time delay. The error path to free a sub-CRQ in case of a failure during channel registration fails to capture the return code of H_FREE_SUB_CRQ which will result in the delay loop being skipped in the case of a retry delay return code. Store the return code result of the H_FREE_SUB_CRQ call such that the return code check in the delay loop evaluates a meaningful value. Also, use the rtas_busy_delay() to check the rc value and delay for the appropriate amount of time. Fixes: 9288d35d70b5 ("ibmvfc: map/request irq and register Sub-CRQ interrupt handler") Signed-off-by: Tyrel Datwyler --- drivers/scsi/ibmvscsi/ibmvfc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index ba6fcf9cbc57..4ac2c442e1e2 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -5670,8 +5671,8 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost, irq_failed: do { - plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie); - } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); + rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie); + } while (rtas_busy_delay(rc)); reg_failed: ibmvfc_free_queue(vhost, scrq); LEAVE;