linux-kernel - Re: [PATCH] leds: Convert led class driver from legacy pm ops to dev_pm

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Message-ID: <CAK5ve-KnpHbNMe6AXCWnibLZt8=cNOkTLW4mN3OtEG6BxQfXrA@mail.gmail.com>
Date:	Thu, 20 Jun 2013 16:23:43 -0700
From:	Bryan Wu <cooloney@...il.com>
To:	Shuah Khan <shuah.kh@...sung.com>
Cc:	"rpurdie@...ys.net" <rpurdie@...ys.net>,
	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Shuah Khan <shuahkhan@...il.com>
Subject: Re: [PATCH] leds: Convert led class driver from legacy pm ops to dev_pm_ops

On Thu, Jun 20, 2013 at 12:08 PM, Shuah Khan <shuah.kh@...sung.com> wrote:
> Convert drivers/leds/led-class to use dev_pm_ops for power management and
> remove Legacy PM ops hooks. With this change, led class registers
> suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy
> class->suspend/resume. When __device_suspend() runs call-backs, it will
> find class->pm ops for the led class.
>

Looks good to me, merged.

Thanks,
-Bryan

> Signed-off-by: Shuah Khan <shuah.kh@...sung.com>
> ---
>  drivers/leds/led-class.c |   10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
> index a20752f..4336e37 100644
> --- a/drivers/leds/led-class.c
> +++ b/drivers/leds/led-class.c
> @@ -156,7 +156,7 @@ void led_classdev_resume(struct led_classdev *led_cdev)
>  }
>  EXPORT_SYMBOL_GPL(led_classdev_resume);
>
> -static int led_suspend(struct device *dev, pm_message_t state)
> +static int led_suspend(struct device *dev)
>  {
>         struct led_classdev *led_cdev = dev_get_drvdata(dev);
>
> @@ -176,6 +176,11 @@ static int led_resume(struct device *dev)
>         return 0;
>  }
>
> +static const struct dev_pm_ops leds_class_dev_pm_ops = {
> +       .suspend        = led_suspend,
> +       .resume         = led_resume,
> +};
> +
>  /**
>   * led_classdev_register - register a new object of led_classdev class.
>   * @parent: The device to register.
> @@ -252,8 +257,7 @@ static int __init leds_init(void)
>         leds_class = class_create(THIS_MODULE, "leds");
>         if (IS_ERR(leds_class))
>                 return PTR_ERR(leds_class);
> -       leds_class->suspend = led_suspend;
> -       leds_class->resume = led_resume;
> +       leds_class->pm = &leds_class_dev_pm_ops;
>         leds_class->dev_attrs = led_class_attrs;
>         return 0;
>  }
> --
> 1.7.10.4
>
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