From patchwork Thu Feb 4 06:23:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weihang Li X-Patchwork-Id: 12066353 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 5F33BC433DB for ; Thu, 4 Feb 2021 06:26:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0727B64E31 for ; Thu, 4 Feb 2021 06:26:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231879AbhBDG0D (ORCPT ); Thu, 4 Feb 2021 01:26:03 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:12392 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231367AbhBDG0D (ORCPT ); Thu, 4 Feb 2021 01:26:03 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4DWT5v1Rh9z7gc6; Thu, 4 Feb 2021 14:24:03 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.498.0; Thu, 4 Feb 2021 14:25:20 +0800 From: Weihang Li To: , CC: , , Subject: [PATCH for-next 3/6] RDMA/hns: Fixes missing error code of CMDQ Date: Thu, 4 Feb 2021 14:23:03 +0800 Message-ID: <1612419786-39173-4-git-send-email-liweihang@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1612419786-39173-1-git-send-email-liweihang@huawei.com> References: <1612419786-39173-1-git-send-email-liweihang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Lang Cheng When posting a multi-descriptors command, the error code of previous failed descriptors may be rewrote to 0 by a later successful descriptor. Fixes: a04ff739f2a9 ("RDMA/hns: Add command queue support for hip08 RoCE driver") Signed-off-by: Lang Cheng Signed-off-by: Weihang Li --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 260c17c..13f7897 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1245,7 +1245,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev, u32 timeout = 0; int handle = 0; u16 desc_ret; - int ret = 0; + int ret; int ntc; spin_lock_bh(&csq->lock); @@ -1283,15 +1283,14 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev, if (hns_roce_cmq_csq_done(hr_dev)) { handle = 0; + ret = 0; while (handle < num) { /* get the result of hardware write back */ desc_to_use = &csq->desc[ntc]; desc[handle] = *desc_to_use; dev_dbg(hr_dev->dev, "Get cmq desc:\n"); desc_ret = le16_to_cpu(desc[handle].retval); - if (desc_ret == CMD_EXEC_SUCCESS) - ret = 0; - else + if (unlikely(desc_ret != CMD_EXEC_SUCCESS)) ret = -EIO; ntc++;