From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Date: Tue, 29 Oct 2013 11:15:09 +0000 Subject: Re: [PATCH 02/12] clocksource: sh_mtu2: Add clk_prepare/unprepare support Message-Id: <526F98BD.9000904@cogentembedded.com> List-Id: References: <1383000569-8916-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> In-Reply-To: <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org Hello. On 29-10-2013 2:49, Laurent Pinchart wrote: > Prepare the clock at probe time, as there is no other appropriate place > in the driver where we're allowed to sleep. > Cc: Daniel Lezcano > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Laurent Pinchart > --- > drivers/clocksource/sh_mtu2.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c > index 4aac9ee..3cf1283 100644 > --- a/drivers/clocksource/sh_mtu2.c > +++ b/drivers/clocksource/sh_mtu2.c > @@ -313,8 +313,20 @@ static int sh_mtu2_setup(struct sh_mtu2_priv *p, struct platform_device *pdev) > goto err1; > } > > - return sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > - cfg->clockevent_rating); > + ret = clk_prepare(p->clk); > + if (ret < 0) > + goto err2; > + > + ret = sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > + cfg->clockevent_rating); > + if (ret < 0) > + goto err3; > + > + return 0; > + err3: > + clk_unprepare(p->clk); > + err2: > + clk_put(p->clk); This one seems to be a fix and so needs to be in a separate patch... WBR, Sergei From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754320Ab3J2LPL (ORCPT ); Tue, 29 Oct 2013 07:15:11 -0400 Received: from mail-la0-f53.google.com ([209.85.215.53]:37026 "EHLO mail-la0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751497Ab3J2LPI (ORCPT ); Tue, 29 Oct 2013 07:15:08 -0400 Message-ID: <526F98BD.9000904@cogentembedded.com> Date: Tue, 29 Oct 2013 15:15:09 +0400 From: Sergei Shtylyov User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: Laurent Pinchart , linux-arm-kernel@lists.infradead.org CC: linux-sh@vger.kernel.org, Mike Turquette , Daniel Lezcano , linux-kernel@vger.kernel.org Subject: Re: [PATCH 02/12] clocksource: sh_mtu2: Add clk_prepare/unprepare support References: <1383000569-8916-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> In-Reply-To: <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello. On 29-10-2013 2:49, Laurent Pinchart wrote: > Prepare the clock at probe time, as there is no other appropriate place > in the driver where we're allowed to sleep. > Cc: Daniel Lezcano > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Laurent Pinchart > --- > drivers/clocksource/sh_mtu2.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c > index 4aac9ee..3cf1283 100644 > --- a/drivers/clocksource/sh_mtu2.c > +++ b/drivers/clocksource/sh_mtu2.c > @@ -313,8 +313,20 @@ static int sh_mtu2_setup(struct sh_mtu2_priv *p, struct platform_device *pdev) > goto err1; > } > > - return sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > - cfg->clockevent_rating); > + ret = clk_prepare(p->clk); > + if (ret < 0) > + goto err2; > + > + ret = sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > + cfg->clockevent_rating); > + if (ret < 0) > + goto err3; > + > + return 0; > + err3: > + clk_unprepare(p->clk); > + err2: > + clk_put(p->clk); This one seems to be a fix and so needs to be in a separate patch... WBR, Sergei From mboxrd@z Thu Jan 1 00:00:00 1970 From: sergei.shtylyov@cogentembedded.com (Sergei Shtylyov) Date: Tue, 29 Oct 2013 15:15:09 +0400 Subject: [PATCH 02/12] clocksource: sh_mtu2: Add clk_prepare/unprepare support In-Reply-To: <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1383000569-8916-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Message-ID: <526F98BD.9000904@cogentembedded.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello. On 29-10-2013 2:49, Laurent Pinchart wrote: > Prepare the clock at probe time, as there is no other appropriate place > in the driver where we're allowed to sleep. > Cc: Daniel Lezcano > Cc: linux-kernel at vger.kernel.org > Signed-off-by: Laurent Pinchart > --- > drivers/clocksource/sh_mtu2.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c > index 4aac9ee..3cf1283 100644 > --- a/drivers/clocksource/sh_mtu2.c > +++ b/drivers/clocksource/sh_mtu2.c > @@ -313,8 +313,20 @@ static int sh_mtu2_setup(struct sh_mtu2_priv *p, struct platform_device *pdev) > goto err1; > } > > - return sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > - cfg->clockevent_rating); > + ret = clk_prepare(p->clk); > + if (ret < 0) > + goto err2; > + > + ret = sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), > + cfg->clockevent_rating); > + if (ret < 0) > + goto err3; > + > + return 0; > + err3: > + clk_unprepare(p->clk); > + err2: > + clk_put(p->clk); This one seems to be a fix and so needs to be in a separate patch... WBR, Sergei