From patchwork Wed Nov 13 06:45:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 11241183 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 9186C15AB for ; Wed, 13 Nov 2019 06:47:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 719EB222D3 for ; Wed, 13 Nov 2019 06:47:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="G16ljdWF"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="Jd8rE6j+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727272AbfKMGrP (ORCPT ); Wed, 13 Nov 2019 01:47:15 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:46070 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725866AbfKMGrP (ORCPT ); Wed, 13 Nov 2019 01:47:15 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 1764A60D90; Wed, 13 Nov 2019 06:47:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1573627634; bh=A09Hg8Gubfo22q2oteGE+XWVmGvlbeGYL8Kj6AbIyz4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G16ljdWF7rvgqhJQE1NXY2PCCcXEwCUBkfS+/YqhJn/EUwbX6nWLB3qhqJfbqyaNA lrybn1L3w0aMKY7fU8kqBTogUhkun6jI+4GIphjim1FyGAEllFaiVrfgnPt250Iq07 9/Ag+5YvOb8zExfx/0hIM3GabwYTRSza7RXA+45M= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 Received: from pacamara-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: cang@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id EF7FE60D84; Wed, 13 Nov 2019 06:47:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1573627626; bh=A09Hg8Gubfo22q2oteGE+XWVmGvlbeGYL8Kj6AbIyz4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jd8rE6j+XYJIr9mFmaoN1BOpwFICQLOuUdI3XsK7mAagQTy12y6LMY3TgHouAi90c RY16rhOYLrNkBuPytiTU8mULYciJwb8JjgVoZzsr3siiJC2LTsGJmZuCgYBzsSl5RE 4soE+curXkPTxxLdSY5UFuYEQqmvhPbVwJLXZGsI= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org EF7FE60D84 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=cang@codeaurora.org From: Can Guo To: asutoshd@codeaurora.org, nguyenb@codeaurora.org, rnayak@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, saravanak@google.com, salyzyn@google.com, cang@codeaurora.org Cc: Alim Akhtar , Avri Altman , Pedro Sousa , "James E.J. Bottomley" , "Martin K. Petersen" , Stanley Chu , Bean Huo , Tomas Winkler , Venkat Gopalakrishnan , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v4 6/7] scsi: ufs: Abort gating if clock on request is pending Date: Tue, 12 Nov 2019 22:45:50 -0800 Message-Id: <1573627552-12615-7-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1573627552-12615-1-git-send-email-cang@codeaurora.org> References: <1573627552-12615-1-git-send-email-cang@codeaurora.org> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Asutosh Das This change attempts to abort gating of clocks if a request to turn-on clocks is pending. This would in turn avoid turning OFF and back ON the clocks. Signed-off-by: Asutosh Das Signed-off-by: Can Guo --- drivers/scsi/ufs/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 8d1b04f..7a5a904 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1610,7 +1610,7 @@ static void ufshcd_gate_work(struct work_struct *work) * state to CLKS_ON. */ if (hba->clk_gating.is_suspended || - (hba->clk_gating.state == REQ_CLKS_ON)) { + (hba->clk_gating.state != REQ_CLKS_OFF)) { hba->clk_gating.state = CLKS_ON; trace_ufshcd_clk_gating(dev_name(hba->dev), hba->clk_gating.state);