From patchwork Sun Dec 20 05:42:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 11983799 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=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 528B4C2BBCD for ; Sun, 20 Dec 2020 05:43:29 +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 D83E223A5E for ; Sun, 20 Dec 2020 05:43:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D83E223A5E 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+linux-mediatek=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=MMolPL9d1Ka5Yc2s28xcNI7Ap/d6zevOPa+G3bhAMUs=; b=ckocdaYYPUdCF26S8lvN1ahBf1 yINw3RihDY68q0P5cjPcGybCJd0pWEFpeawZ60dXYqKYM67BlKuvIWpMmH/k0HUHi1tJNohQx65Ev IrnNlJGdrLqEBebRGPhKG92y+DEoaJcFqqaHbX5lOSF63VcxESrnWChvOyo6nFHEqtIFv26v5++AI Yp7YBuBb0V6MoggIWWbTKFe7EX6nW1eg6IbfADn4jrevXz6b0Ux11LjgKiGgY0Oewer2ghy9xoXtG nHDF6D2NyhryikImqPFFdvw39lualTb8LhqApWIrdTEbdk/AyS04Vh4Gqy6rBGIqV2QO0Jyxgm/GX 3gxG6hZw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kqrUy-0007V9-Ci; Sun, 20 Dec 2020 05:43:16 +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 1kqrUm-0007Sj-OU; Sun, 20 Dec 2020 05:43:06 +0000 IronPort-SDR: 5WlqiIwRCjv7V81K6UXntBZDcOVl0ukexwOr4lrlu/vujw110R8DuYvhF64q+dVywvawGwYee3 dTKPNNcb5TTVLbd5W+uTgKNwq07LCL+r1PnyRN54As/1HRVH1Wy8GLHAPihOScJ5dUcpPkT5Wv ZxtaHeBh1S43EeTpIW4MNOglRfUvZY+V8y2gcQPB7es0OV+/edYZnrak4FMl7MsnV2ymrssxzd pcrK/6/xl9UWOuQvqsocFz066h/XnIzrYuGonpQKx7UrexPoByVzwV8qfa/8bfZ5buhnwvaDc7 A5k= X-IronPort-AV: E=Sophos;i="5.78,434,1599548400"; d="scan'208";a="29398172" Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by labrats.qualcomm.com with ESMTP; 19 Dec 2020 21:43:02 -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; 19 Dec 2020 21:43:01 -0800 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id B2EC7212A8; Sat, 19 Dec 2020 21:43:01 -0800 (PST) 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 v6 2/3] scsi: ufs: Clean up ufshcd_exit_clk_scaling/gating() Date: Sat, 19 Dec 2020 21:42:46 -0800 Message-Id: <1608442968-38560-3-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1608442968-38560-1-git-send-email-cang@codeaurora.org> References: <1608442968-38560-1-git-send-email-cang@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201220_004305_200260_A759B3AF X-CRM114-Status: GOOD ( 16.48 ) 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: Bart Van Assche , "Martin K. Petersen" , "James E.J. Bottomley" , open list , Satya Tangirala , 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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org ufshcd_hba_exit() is always called after ufshcd_exit_clk_scaling() and ufshcd_exit_clk_gating(), so move ufshcd_exit_clk_scaling/gating() to ufshcd_hba_exit(). Reviewed-by: Stanley Chu Reviewed-by: Bean Huo Signed-off-by: Can Guo --- drivers/scsi/ufs/ufshcd.c | 32 +++++++++++++++----------------- drivers/scsi/ufs/ufshcd.h | 4 ++++ 2 files changed, 19 insertions(+), 17 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 79752a7..2dee21e 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1857,11 +1857,14 @@ static void ufshcd_init_clk_scaling(struct ufs_hba *hba) snprintf(wq_name, sizeof(wq_name), "ufs_clkscaling_%d", hba->host->host_no); hba->clk_scaling.workq = create_singlethread_workqueue(wq_name); + + hba->clk_scaling.is_initialized = true; } static void ufshcd_exit_clk_scaling(struct ufs_hba *hba) { - if (!ufshcd_is_clkscaling_supported(hba)) + if (!ufshcd_is_clkscaling_supported(hba) || + !hba->clk_scaling.is_initialized) return; if (hba->devfreq) @@ -1905,12 +1908,16 @@ static void ufshcd_init_clk_gating(struct ufs_hba *hba) hba->clk_gating.enable_attr.attr.mode = 0644; if (device_create_file(hba->dev, &hba->clk_gating.enable_attr)) dev_err(hba->dev, "Failed to create sysfs for clkgate_enable\n"); + + hba->clk_gating.is_initialized = true; } static void ufshcd_exit_clk_gating(struct ufs_hba *hba) { - if (!ufshcd_is_clkgating_allowed(hba)) + if (!ufshcd_is_clkgating_allowed(hba) || + !hba->clk_gating.is_initialized) return; + device_remove_file(hba->dev, &hba->clk_gating.delay_attr); device_remove_file(hba->dev, &hba->clk_gating.enable_attr); cancel_work_sync(&hba->clk_gating.ungate_work); @@ -7775,7 +7782,6 @@ static void ufshcd_async_scan(void *data, async_cookie_t cookie) */ if (ret) { pm_runtime_put_sync(hba->dev); - ufshcd_exit_clk_scaling(hba); ufshcd_hba_exit(hba); } } @@ -8212,12 +8218,12 @@ static int ufshcd_hba_init(struct ufs_hba *hba) static void ufshcd_hba_exit(struct ufs_hba *hba) { if (hba->is_powered) { + ufshcd_exit_clk_scaling(hba); + ufshcd_exit_clk_gating(hba); + if (hba->eh_wq) + destroy_workqueue(hba->eh_wq); ufshcd_variant_hba_exit(hba); ufshcd_setup_vreg(hba, false); - ufshcd_suspend_clkscaling(hba); - if (ufshcd_is_clkscaling_supported(hba)) - if (hba->devfreq) - ufshcd_suspend_clkscaling(hba); ufshcd_setup_clocks(hba, false); ufshcd_setup_hba_vreg(hba, false); hba->is_powered = false; @@ -8964,13 +8970,9 @@ void ufshcd_remove(struct ufs_hba *hba) blk_mq_free_tag_set(&hba->tmf_tag_set); blk_cleanup_queue(hba->cmd_queue); scsi_remove_host(hba->host); - destroy_workqueue(hba->eh_wq); /* disable interrupts */ ufshcd_disable_intr(hba, hba->intr_mask); ufshcd_hba_stop(hba); - - ufshcd_exit_clk_scaling(hba); - ufshcd_exit_clk_gating(hba); ufshcd_hba_exit(hba); } EXPORT_SYMBOL_GPL(ufshcd_remove); @@ -9169,7 +9171,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) err = devm_request_irq(dev, irq, ufshcd_intr, IRQF_SHARED, UFSHCD, hba); if (err) { dev_err(hba->dev, "request irq failed\n"); - goto exit_gating; + goto out_disable; } else { hba->is_irq_enabled = true; } @@ -9177,7 +9179,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) err = scsi_add_host(host, hba->dev); if (err) { dev_err(hba->dev, "scsi_add_host failed\n"); - goto exit_gating; + goto out_disable; } hba->cmd_queue = blk_mq_init_queue(&hba->host->tag_set); @@ -9260,10 +9262,6 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) blk_cleanup_queue(hba->cmd_queue); out_remove_scsi_host: scsi_remove_host(hba->host); -exit_gating: - ufshcd_exit_clk_scaling(hba); - ufshcd_exit_clk_gating(hba); - destroy_workqueue(hba->eh_wq); out_disable: hba->is_irq_enabled = false; ufshcd_hba_exit(hba); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 5737679..cb9075d 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -347,6 +347,7 @@ enum clk_gating_state { * @delay_attr: sysfs attribute to control delay_attr * @enable_attr: sysfs attribute to enable/disable clock gating * @is_enabled: Indicates the current status of clock gating + * @is_initialized: Indicates whether clock gating is initialized or not * @active_reqs: number of requests that are pending and should be waited for * completion before gating clocks. */ @@ -359,6 +360,7 @@ struct ufs_clk_gating { struct device_attribute delay_attr; struct device_attribute enable_attr; bool is_enabled; + bool is_initialized; int active_reqs; struct workqueue_struct *clk_gating_workq; }; @@ -386,6 +388,7 @@ struct ufs_saved_pwr_info { clkscale_enable sysfs node * @is_allowed: tracks if scaling is currently allowed or not, used to block clock scaling which is not invoked from devfreq governor + * @is_initialized: Indicates whether clock scaling is initialized or not * @is_busy_started: tracks if busy period has started or not * @is_suspended: tracks if devfreq is suspended or not */ @@ -401,6 +404,7 @@ struct ufs_clk_scaling { struct work_struct resume_work; bool is_enabled; bool is_allowed; + bool is_initialized; bool is_busy_started; bool is_suspended; };