diff mbox

[02/12] clocksource: sh_mtu2: Add clk_prepare/unprepare support

Message ID 1383000569-8916-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com (mailing list archive)
State Superseded
Commit c11123d447a1af7f71f288cf8d193729f964ec18
Headers show

Commit Message

Laurent Pinchart Oct. 28, 2013, 10:49 p.m. UTC
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 <daniel.lezcano@linaro.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 drivers/clocksource/sh_mtu2.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

Comments

Simon Horman Oct. 29, 2013, 5:55 a.m. UTC | #1
On Mon, Oct 28, 2013 at 11:49:19PM +0100, 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 <daniel.lezcano@linaro.org>
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>  drivers/clocksource/sh_mtu2.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)

Thanks Laurent,

I have queued this up in the clocksources branch of my renesas tree.
I will send a pull request to Mike once v3.13-rc1 has hit the shelves.
Mike, please let me know if you would prefer something earlier than that.
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Sergei Shtylyov Oct. 29, 2013, 11:15 a.m. UTC | #2
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 <daniel.lezcano@linaro.org>
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>   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

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Laurent Pinchart Oct. 29, 2013, 1:24 p.m. UTC | #3
Hi Sergei,

On Tuesday 29 October 2013 15:15:09 Sergei Shtylyov wrote:
> 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 <daniel.lezcano@linaro.org>
> > Cc: linux-kernel@vger.kernel.org
> > Signed-off-by: Laurent Pinchart
> > <laurent.pinchart+renesas@ideasonboard.com>
> > ---
> > 
> >   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...

I'll split the patch and repost (same for 03/12)
diff mbox

Patch

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);
  err1:
 	iounmap(p->mapbase);
  err0: