From patchwork Mon Aug 3 09:04:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 11697681 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 5E3851575 for ; Mon, 3 Aug 2020 09:06:47 +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 37312206D7 for ; Mon, 3 Aug 2020 09:06:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="x+b5o18g" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37312206D7 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-arm-kernel-bounces+patchwork-linux-arm=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=3SdoQJ5uHL0IBeUy8Ip+G6bYb0UFa6GbpmHHpeDQMCo=; b=x+b5o18gGdfgQAP9IaNvlrvjks p+atlWAl6IprR1136sKBSN68RLRMyR4Dh0zRdM5I00t4tsrVV7Zre1xf5jpXZEaImFGV07kAX10XM TY1PfiJGiNX/9yAMfk8wvsrjS1DREqfwiGxqWhitiKoBJdfseATvI36Q56jgeWG2o2Bssmsg9uHGI 9bXwS1CWsj1JvvMjgtA1ZxVKRnEuqVY0xKQpwym+yme4bPoko8wZu4ueizuUokyDrtFnHfGL4Conc uqUNVeGiwUp8ZMvb4IOq0/QEQ1+drWOEIAQu4CoJXGL1OhomTT+m26r6h73jEoKWaHZetYKZ2cRqU J5RwPtXA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k2WPP-0004ye-Hr; Mon, 03 Aug 2020 09:05:27 +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 1k2WPK-0004wE-6b; Mon, 03 Aug 2020 09:05:24 +0000 IronPort-SDR: tiMR4BmNoE4dGZXEe91/ql5tjyhGGdcKzVBe6GFDh5EPp4+AcxMCmZLDPHJnWA+sOQv/ltA46z mU9ijqkmdMJlQJfcxSytc4TKkbX1cpn6x0No59DuvABy0CJ+EIcDljLzOIrkcvMfhgjml9fMSl ajgrm5HGIE0QMkK9vXIrj6WOxkgCAfyiY9pBjBzq7RDZj34UlBm2tXzcfjinD4Y5+jB4Vzkf5p XO9a9aETGR7DJVr6EFFR7BJ2Lnit4TMbXXnrQhbFIgsLKUTw9FOTtdAq3ZtR4U9mniBa1uo57M W9A= X-IronPort-AV: E=Sophos;i="5.75,429,1589266800"; d="scan'208";a="47240958" Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by labrats.qualcomm.com with ESMTP; 03 Aug 2020 02:05:21 -0700 Received: from stor-presley.qualcomm.com ([192.168.140.85]) by ironmsg02-sd.qualcomm.com with ESMTP; 03 Aug 2020 02:05:20 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 0AB2A214E4; Mon, 3 Aug 2020 02:05:21 -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 v9 9/9] scsi: ufs: Properly release resources if a task is aborted successfully Date: Mon, 3 Aug 2020 02:04:44 -0700 Message-Id: <1596445485-19834-10-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596445485-19834-1-git-send-email-cang@codeaurora.org> References: <1596445485-19834-1-git-send-email-cang@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200803_050522_452447_019090C3 X-CRM114-Status: GOOD ( 10.25 ) 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 SPF_PASS SPF: sender matches SPF record 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bart Van Assche , "Martin K. Petersen" , "James E.J. Bottomley" , open list , Avri Altman , "moderated list:ARM/Mediatek SoC support" , Alim Akhtar , Matthias Brugger , Stanley Chu , "moderated list:ARM/Mediatek SoC support" , Bean Huo MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org In current UFS task abort hook, namely ufshcd_abort(), if a task is aborted successfully, clock scaling busy time statistics is not updated and, most important, clk_gating.active_reqs is not decreased, which makes clk_gating.active_reqs stay above zero forever, thus clock gating would never happen. To fix it, instead of releasing resources "mannually", use the existing func __ufshcd_transfer_req_compl(). This can also eliminate racing of scsi_dma_unmap() from the real completion in IRQ handler path. Signed-off-by: Can Guo CC: Stanley Chu Reviewed-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index d7d2758..9a48389 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6635,11 +6635,8 @@ 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: