From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 A028EC433E0 for ; Thu, 6 Aug 2020 12:27:51 +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 7B73D22DFB for ; Thu, 6 Aug 2020 12:27:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qUXuFH17" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B73D22DFB 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+linux-arm-kernel=archiver.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=xVcQEEGYe6raFPC3Fnt9VqbZlr2IHWDpRWJIA4KgsPI=; b=qUXuFH17lQpu6xT8iLdrN9+VXB WmEYC8JOtCRcpc9F6nuHBmmFFWCf35h6DzJX/AvO0oT/1N57+19FpTgB4oN9nBARZEpDlcmdPLxBO yTeUnXdkaR9MUPCVDyCNzILPATOaKVqmcRzxbIB5LlCnE0Bii+Rmz+xZGzdi4L/zK+f5cF4BO1tcC p3vqSVmCzwMmw9aXsw//kkAYG5gS0MtZzZQX2fOHv/20fIsNjzUHA+PA1piPad4zigdLQ8gxF3JLH KbKRmDMVEAJSColAtwwouRsp1UvL9iFm6DZfaxih73QeTFaQ5ETmM83Vnw6g8cyEyngG4+m1GFjG3 66dXsLjQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3Y7P-0000vu-67; Thu, 06 Aug 2020 05:07:07 +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 1k3Y7N-0000vG-43; Thu, 06 Aug 2020 05:07:05 +0000 IronPort-SDR: QLVrMAOEpUUgTjsvYyz0a51seXYBaPgpETDw5Qyl6hTyOv4IIZ0wZ/qjPIR84Fc21aFvbVtmyy bY7wkePJzez75bac8OW0bapsr7te5gNNUn/bGjLTXw6D6PmAZdokjkkc7OfI1zIE/B0w69d87H vCnncy80cu+7lr6wWFN7WE42ysz6wOPpgDSpWX29+4BIZOWojIOjmyEvxUTrKg98Y30hTy5n8B z0HhIL06ehxA3n3QqHRNhicrvwgJ7odwX55ya8llmBmvXVWVY+lK/TlLfNKLIlxcTpb8pggV7e I4E= X-IronPort-AV: E=Sophos;i="5.75,440,1589266800"; d="scan'208";a="29068261" Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by labrats.qualcomm.com with ESMTP; 05 Aug 2020 22:07:04 -0700 Received: from stor-presley.qualcomm.com ([192.168.140.85]) by ironmsg02-sd.qualcomm.com with ESMTP; 05 Aug 2020 22:07:03 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 06A2621562; Wed, 5 Aug 2020 22:07:04 -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: Wed, 5 Aug 2020 22:06:20 -0700 Message-Id: <1596690383-16438-10-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596690383-16438-1-git-send-email-cang@codeaurora.org> References: <1596690383-16438-1-git-send-email-cang@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200806_010705_318617_94DB9A78 X-CRM114-Status: UNSURE ( 7.66 ) X-CRM114-Notice: Please train this message. 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.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 diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index b2947ab..9541fc7 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: -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel