From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D18F52C0215 for ; Wed, 7 Aug 2013 06:45:05 +1000 (EST) From: Gerhard Sittig To: linuxppc-dev@lists.ozlabs.org, Anatolij Gustschin , Mike Turquette , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH v4 03/31] USB: fsl-mph-dr-of: cleanup clock API use Date: Tue, 6 Aug 2013 22:43:43 +0200 Message-Id: <1375821851-31609-4-git-send-email-gsi@denx.de> In-Reply-To: <1375821851-31609-1-git-send-email-gsi@denx.de> References: <1374495298-22019-1-git-send-email-gsi@denx.de> <1375821851-31609-1-git-send-email-gsi@denx.de> Cc: Detlev Zundel , Wolfram Sang , Greg Kroah-Hartman , Gerhard Sittig , Rob Herring , Mark Brown , Marc Kleine-Budde , David Woodhouse , Wolfgang Grandegger , Mauro Carvalho Chehab List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , use devm_get_clk() for automatic put upon device close, check for and propagate errors when enabling clocks, must prepare clocks before they can get enabled, unprepare after disable Signed-off-by: Gerhard Sittig --- drivers/usb/host/fsl-mph-dr-of.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 11e0b79..b8a1866 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -260,6 +260,7 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; struct clk *clk; + int err; char clk_name[10]; int base, clk_num; @@ -272,13 +273,16 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev) return -ENODEV; snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num); - clk = clk_get(&pdev->dev, clk_name); + clk = devm_clk_get(&pdev->dev, clk_name); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clk\n"); return PTR_ERR(clk); } - - clk_enable(clk); + err = clk_prepare_enable(clk); + if (err) { + dev_err(&pdev->dev, "failed to enable clk\n"); + return err; + } pdata->clk = clk; if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { @@ -302,10 +306,8 @@ static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) pdata->regs = NULL; - if (pdata->clk) { - clk_disable(pdata->clk); - clk_put(pdata->clk); - } + if (pdata->clk) + clk_disable_unprepare(pdata->clk); } static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { -- 1.7.10.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: gsi@denx.de (Gerhard Sittig) Date: Tue, 6 Aug 2013 22:43:43 +0200 Subject: [PATCH v4 03/31] USB: fsl-mph-dr-of: cleanup clock API use In-Reply-To: <1375821851-31609-1-git-send-email-gsi@denx.de> References: <1374495298-22019-1-git-send-email-gsi@denx.de> <1375821851-31609-1-git-send-email-gsi@denx.de> Message-ID: <1375821851-31609-4-git-send-email-gsi@denx.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org use devm_get_clk() for automatic put upon device close, check for and propagate errors when enabling clocks, must prepare clocks before they can get enabled, unprepare after disable Signed-off-by: Gerhard Sittig --- drivers/usb/host/fsl-mph-dr-of.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 11e0b79..b8a1866 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -260,6 +260,7 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; struct clk *clk; + int err; char clk_name[10]; int base, clk_num; @@ -272,13 +273,16 @@ int fsl_usb2_mpc5121_init(struct platform_device *pdev) return -ENODEV; snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num); - clk = clk_get(&pdev->dev, clk_name); + clk = devm_clk_get(&pdev->dev, clk_name); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clk\n"); return PTR_ERR(clk); } - - clk_enable(clk); + err = clk_prepare_enable(clk); + if (err) { + dev_err(&pdev->dev, "failed to enable clk\n"); + return err; + } pdata->clk = clk; if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { @@ -302,10 +306,8 @@ static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) pdata->regs = NULL; - if (pdata->clk) { - clk_disable(pdata->clk); - clk_put(pdata->clk); - } + if (pdata->clk) + clk_disable_unprepare(pdata->clk); } static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { -- 1.7.10.4