From patchwork Thu Jan 28 04:16:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 12051711 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 A1B69C433DB for ; Thu, 28 Jan 2021 04:18:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 733C164DD6 for ; Thu, 28 Jan 2021 04:18:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231272AbhA1ESJ (ORCPT ); Wed, 27 Jan 2021 23:18:09 -0500 Received: from labrats.qualcomm.com ([199.106.110.90]:40784 "EHLO labrats.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231243AbhA1ESF (ORCPT ); Wed, 27 Jan 2021 23:18:05 -0500 IronPort-SDR: uis1MRu9wOS/NldmsOhX/HutjYmbB/JNYuv7iW4+GFNHgfwxrlgqtngdvcI3YTiwnSKBYMMnX3 H+aHPlk67ZGR3x5e/w8t6p7o6SWAbgqZj8ezrRNIjGqswB0qS3ae+ywx9AkbaisKL7ITpHRRvR npbnw8GZGQTOJHBS+KCQ/aIS3/uSce0zdAwVEoXaDubkLqx1PhS/w7pwnk0lH33jVQoXpdYf35 iVzs2ISTKp8id5pXpj01jDYHUAm8ZAm0eIy8zEvRUZ7UP5CApvO9s3pv4nAujA4kepIRQMcOY+ UZw= X-IronPort-AV: E=Sophos;i="5.79,381,1602572400"; d="scan'208";a="47715649" Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by labrats.qualcomm.com with ESMTP; 27 Jan 2021 20:17:45 -0800 X-QCInternal: smtphost Received: from wsp769891wss.qualcomm.com (HELO stor-presley.qualcomm.com) ([192.168.140.85]) by ironmsg02-sd.qualcomm.com with ESMTP; 27 Jan 2021 20:17:43 -0800 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 4A40A219A2; Wed, 27 Jan 2021 20:17:43 -0800 (PST) From: Can Guo To: jaegeuk@kernel.org, bvanassche@acm.org, asutoshd@codeaurora.org, nguyenb@codeaurora.org, hongwus@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, cang@codeaurora.org Cc: Alim Akhtar , Avri Altman , "James E.J. Bottomley" , "Martin K. Petersen" , Stanley Chu , Bean Huo , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 1/3] scsi: ufs: Fix task management request completion timeout Date: Wed, 27 Jan 2021 20:16:02 -0800 Message-Id: <1611807365-35513-2-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1611807365-35513-1-git-send-email-cang@codeaurora.org> References: <1611807365-35513-1-git-send-email-cang@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org ufshcd_tmc_handler() calls blk_mq_tagset_busy_iter(fn = ufshcd_compl_tm()), but since blk_mq_tagset_busy_iter() only iterates over all reserved tags and requests which are not in IDLE state, ufshcd_compl_tm() never gets a chance to run. Thus, TMR always ends up with completion timeout. Fix it by calling blk_mq_start_request() in __ufshcd_issue_tm_cmd(). Fixes: 69a6c269c097 ("scsi: ufs: Use blk_{get,put}_request() to allocate and free TMFs") Signed-off-by: Can Guo --- drivers/scsi/ufs/ufshcd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 8da75e6..c0c5925 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6395,6 +6395,7 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba, spin_lock_irqsave(host->host_lock, flags); task_tag = hba->nutrs + free_slot; + blk_mq_start_request(req); treq->req_header.dword_0 |= cpu_to_be32(task_tag);