linux-kernel - Re: [PATCH 4/4] PM / devfreq: Consider hibernation in pm notifier

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Message-ID: <CAJ0PZbRJLB_WcOkFq_e=DBCR7ABYoin-voBtbq61Pqd_wyzwmw@mail.gmail.com>
Date:	Wed, 20 Nov 2013 18:46:43 +0900
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Jonghwan Choi <jhbird.choi@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Kukjin Kim <kgene.kim@...sung.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Samsung SoC <linux-samsung-soc@...r.kernel.org>,
	Jonghwan Choi <jhbird.choi@...sung.com>
Subject: Re: [PATCH 4/4] PM / devfreq: Consider hibernation in pm notifier

On Tue, Nov 19, 2013 at 10:30 PM, Jonghwan Choi <jhbird.choi@...il.com> wrote:
> Frequency lock should be considered in suspend/hibernation.
>
> Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>

Signed-off-by: MyungJoo Ham <myungjoo.ham@...sung.com>




Cheers,
MyungJoo.

> ---
>  drivers/devfreq/exynos/exynos5_bus.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/devfreq/exynos/exynos5_bus.c b/drivers/devfreq/exynos/exynos5_bus.c
> index a60da3c..bd672de0 100644
> --- a/drivers/devfreq/exynos/exynos5_bus.c
> +++ b/drivers/devfreq/exynos/exynos5_bus.c
> @@ -268,6 +268,7 @@ static int exynos5_busfreq_int_pm_notifier_event(struct notifier_block *this,
>         int err = 0;
>
>         switch (event) {
> +       case PM_HIBERNATION_PREPARE:
>         case PM_SUSPEND_PREPARE:
>                 /* Set Fastest and Deactivate DVFS */
>                 mutex_lock(&data->lock);
> @@ -300,6 +301,7 @@ unlock:
>                 if (err)
>                         return NOTIFY_BAD;
>                 return NOTIFY_OK;
> +       case PM_POST_HIBERNATION:
>         case PM_POST_RESTORE:
>         case PM_POST_SUSPEND:
>                 /* Reactivate */
> --
> 1.8.1.2
>
> --
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-- 
MyungJoo Ham, Ph.D.
System S/W Lab, S/W Center, Samsung Electronics
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