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=-9.0 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 29D4DC282DA for ; Wed, 17 Apr 2019 20:44:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E9DC8217FA for ; Wed, 17 Apr 2019 20:44:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="0CMRmUqU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387447AbfDQUom (ORCPT ); Wed, 17 Apr 2019 16:44:42 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:41601 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727013AbfDQUoJ (ORCPT ); Wed, 17 Apr 2019 16:44:09 -0400 Received: by mail-wr1-f65.google.com with SMTP id r4so75149wrq.8 for ; Wed, 17 Apr 2019 13:44:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=85XK5dFLbNA8+J3uTS62n225ZxyTN5YNEbzJYjOQJYI=; b=0CMRmUqUZL8eSuaFv8AWE1G/Dp+AJmyE7FjzasQPPO9lvMFXPShi0mRIG1wXHdypkM 2PHmFlVq9WLs4XzMlfrDM85jmBZN/ZcbQHpa0mVMeB288npUX7nVLUgOep3v84uu66r7 l8gVwuFIrhHSszYeWTKEYpmJL7UiFALMeLRCJSsoNt3JCG7amlTJ2V5qlyfaOkh4KtZP hA2F48yKHTxOCLrQ1g6TJpMXV9QyYPSnHc82vsby+KO+MY8gNv3PjWAgwKNtRF9s+l3A udy9ymOe1se5x2gt5aG5gTK4D4oFUIlZ12a8im8LC/o7Jw2J/mKa2AVsgmnJlFyWicx6 VP1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=85XK5dFLbNA8+J3uTS62n225ZxyTN5YNEbzJYjOQJYI=; b=jIfpiSJOxji/+ZERaek5kwifVEH8B7beYkrt/5AOP84mU1VTpMo3KmsZxEDh4HXUEl sv2JK8jWBOHc59vVTnSzxnIF+Ld7cXcayFS0wHB/2+1aFeiV5lGGvvBGTNyQcU26BAAw UBycfdaOnMGD+MCZEDq3M0TRAasdFm3513uC9yoXWLCqmCGdclMksbNoLNIjCtvI+TVz QrwWurIJYnHAMX7yXENAhsOC86axGZr2l7iZ2akEpin8qJ2zLEyODkbSCtRxofZH8BFE TNBP2JSy6VmBEVMhESW7usQsKMqC56N8uTvEsjlO74dCnvUhSM3YRoe32Vp2cPjyRptB tWzA== X-Gm-Message-State: APjAAAVoiNJsOph49yvsWdByB9zzUtXh4B+fb5WNCcBr6J7VuknKqEDY oQtM8awaU6hzfuiwECgDCJgZoP5xoac= X-Google-Smtp-Source: APXvYqxcJ09qdX7h+qjEtcqrrRChogD9+j4GpR2dyrrqyeNgu1adXMaIhDaHeetTkTmJHa9deYTH8w== X-Received: by 2002:adf:f102:: with SMTP id r2mr42879784wro.136.1555533847319; Wed, 17 Apr 2019 13:44:07 -0700 (PDT) Received: from boomer.lan (cag06-3-82-243-161-21.fbx.proxad.net. [82.243.161.21]) by smtp.googlemail.com with ESMTPSA id c20sm98716866wre.28.2019.04.17.13.44.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 13:44:06 -0700 (PDT) From: Jerome Brunet To: Ulf Hansson , Kevin Hilman Cc: Jerome Brunet , linux-mmc@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/7] mmc: meson-gx: remove open coded read with timeout Date: Wed, 17 Apr 2019 22:43:49 +0200 Message-Id: <20190417204355.469-2-jbrunet@baylibre.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190417204355.469-1-jbrunet@baylibre.com> References: <20190417204355.469-1-jbrunet@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is already a function available to poll a register until a condition is met. Let's use it instead of open coding it. Signed-off-by: Jerome Brunet --- drivers/mmc/host/meson-gx-mmc.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index 2eba507790e4..2deeacc051b1 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -1100,7 +1101,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) static int meson_mmc_wait_desc_stop(struct meson_host *host) { - int loop; u32 status; /* @@ -1110,20 +1110,10 @@ static int meson_mmc_wait_desc_stop(struct meson_host *host) * If we don't confirm the descriptor is stopped, it might raise new * IRQs after we have called mmc_request_done() which is bad. */ - for (loop = 50; loop; loop--) { - status = readl(host->regs + SD_EMMC_STATUS); - if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) - udelay(100); - else - break; - } - if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) { - dev_err(host->dev, "Timed out waiting for host to stop\n"); - return -ETIMEDOUT; - } - - return 0; + return readl_poll_timeout(host->regs + SD_EMMC_STATUS, status, + !(status & (STATUS_BUSY | STATUS_DESC_BUSY)), + 100, 5000); } static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id) -- 2.20.1 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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 8F2A2C282DC for ; Wed, 17 Apr 2019 20:44:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 56CF12183E for ; 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[82.243.161.21]) by smtp.googlemail.com with ESMTPSA id c20sm98716866wre.28.2019.04.17.13.44.06 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 17 Apr 2019 13:44:06 -0700 (PDT) From: Jerome Brunet To: Ulf Hansson , Kevin Hilman Subject: [PATCH 1/7] mmc: meson-gx: remove open coded read with timeout Date: Wed, 17 Apr 2019 22:43:49 +0200 Message-Id: <20190417204355.469-2-jbrunet@baylibre.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190417204355.469-1-jbrunet@baylibre.com> References: <20190417204355.469-1-jbrunet@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190417_134409_681718_4DD8E377 X-CRM114-Status: GOOD ( 13.06 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Jerome Brunet Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org There is already a function available to poll a register until a condition is met. Let's use it instead of open coding it. Signed-off-by: Jerome Brunet --- drivers/mmc/host/meson-gx-mmc.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index 2eba507790e4..2deeacc051b1 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -1100,7 +1101,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) static int meson_mmc_wait_desc_stop(struct meson_host *host) { - int loop; u32 status; /* @@ -1110,20 +1110,10 @@ static int meson_mmc_wait_desc_stop(struct meson_host *host) * If we don't confirm the descriptor is stopped, it might raise new * IRQs after we have called mmc_request_done() which is bad. */ - for (loop = 50; loop; loop--) { - status = readl(host->regs + SD_EMMC_STATUS); - if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) - udelay(100); - else - break; - } - if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) { - dev_err(host->dev, "Timed out waiting for host to stop\n"); - return -ETIMEDOUT; - } - - return 0; + return readl_poll_timeout(host->regs + SD_EMMC_STATUS, status, + !(status & (STATUS_BUSY | STATUS_DESC_BUSY)), + 100, 5000); } static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id) -- 2.20.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic