From patchwork Sun Aug 9 12:15:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 11706669 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D875114F6 for ; Sun, 9 Aug 2020 12:16:54 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B164F206A2 for ; Sun, 9 Aug 2020 12:16:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="mdMC9Der" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B164F206A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yR5Ne6vFHgMKhEq0wcNLDeeNalxbFWf56tdQaCxCye0=; b=mdMC9DertbyF4h79oXX0SmugQ5 +AjxVUQQdv9MpOGLO9iIp6FWl6tVET6JFNsjAU3rwH+xYx0wt5tTHcDKE51CbV9vPH/WpLZUVH2Vi SA5Q+Y8DKvNGOKXspDURnEZMfQQD4ZB/sIBSAOzgDt1NFx0O7cx18RjXwYVqMqVngiUZT5E5BSQny 5MsZs+lTphIF8oEfvtshUBGaxrHBPTsZv6okbDANVMEuly5fb2xHEtUWVHnd0VjwJyiHM5WLzDs5t MiXaMrc8ipk39qesEuDnLCL1B1tdi7+JF4zZgyjPVykn2cmZ+xDH0DrWjsm/MNNk6ziqYXxhU6/Z/ KJZCz2Hg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4kFw-0003vt-Im; Sun, 09 Aug 2020 12:16:52 +0000 Received: from labrats.qualcomm.com ([199.106.110.90]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k4kFk-0003uJ-6u; Sun, 09 Aug 2020 12:16:41 +0000 IronPort-SDR: yssPynAa+KB3fJ5xFlAz6+8VyxgQIDBqTyEBCW7y56j0EeM9Sv8MbR4pzyH9mINWtYQGZP2+V2 ohzFu1iPS29+MrL8ytpycWwTmMOtr7G2tkHJO8WNEVVWoFCY9z5f/9UQxx5/BGz1dk8ChP1Afd oa6NZjOtNtfw8wyYx+1JJd0AD93szwXkbJZ7VpRajwo+lgBGiSvDVs+OYiZXb4AWLA0K752HZr Z18quy9XXI6vlfuF7HJU4zJoIpRFTigY3pFkOQGUFSUjfsvPXROZnQlK8XABtBxzwrws1IOekI dXc= X-IronPort-AV: E=Sophos;i="5.75,453,1589266800"; d="scan'208";a="47246501" Received: from unknown (HELO ironmsg01-sd.qualcomm.com) ([10.53.140.141]) by labrats.qualcomm.com with ESMTP; 09 Aug 2020 05:16:40 -0700 Received: from stor-presley.qualcomm.com ([192.168.140.85]) by ironmsg01-sd.qualcomm.com with ESMTP; 09 Aug 2020 05:16:38 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id CBE512156E; Sun, 9 Aug 2020 05:16:38 -0700 (PDT) From: Can Guo To: asutoshd@codeaurora.org, nguyenb@codeaurora.org, hongwus@codeaurora.org, rnayak@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, saravanak@google.com, salyzyn@google.com, cang@codeaurora.org Subject: [PATCH 9/9] scsi: ufs: Properly release resources if a task is aborted successfully Date: Sun, 9 Aug 2020 05:15:55 -0700 Message-Id: <1596975355-39813-10-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596975355-39813-1-git-send-email-cang@codeaurora.org> References: <1596975355-39813-1-git-send-email-cang@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200809_081640_545440_C04074B8 X-CRM114-Status: UNSURE ( 9.09 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Santosh Y , Sujit Reddy Thumma , Bart Van Assche , "Martin K. Petersen" , "James E.J. Bottomley" , open list , James Bottomley , Avri Altman , "moderated list:ARM/Mediatek SoC support" , Alim Akhtar , Dolev Raviv , Matthias Brugger , Stanley Chu , "moderated list:ARM/Mediatek SoC support" , Bean Huo MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org In current UFS task abort hook, namely ufshcd_abort(), if one task is aborted successfully, clk_gating.active_reqs held by this task is not decreased, which makes clk_gating.active_reqs stay above zero forever, thus clock gating would never happen. Instead of releasing resources of one task "manually", use the existing func __ufshcd_transfer_req_compl(). This change can also eliminate possible racing of scsi_dma_unmap() from the real completion in IRQ handler path. Fixes: 5a0b0cb9bee76 ("ufs: Add support for clock gating") Signed-off-by: Can Guo CC: Stanley Chu Reviewed-by: Stanley Chu Reviewed-by: Asutosh Das diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9ebb5cd..efb40b1 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6636,11 +6636,8 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) goto out; } - scsi_dma_unmap(cmd); - spin_lock_irqsave(host->host_lock, flags); - ufshcd_outstanding_req_clear(hba, tag); - hba->lrb[tag].cmd = NULL; + __ufshcd_transfer_req_compl(hba, (1UL << tag)); spin_unlock_irqrestore(host->host_lock, flags); out: