linux-kernel - Re: [PATCH 6/7] drm/panfrost: dev_pm_opp_put

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Date:   Mon, 9 Nov 2020 09:17:47 +0000
From:   Steven Price <steven.price@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
        digetx@...il.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] drm/panfrost: dev_pm_opp_put_*() accepts NULL
 argument

On 06/11/2020 07:03, Viresh Kumar wrote:
> The dev_pm_opp_put_*() APIs now accepts a NULL opp_table pointer and so
> there is no need for us to carry the extra check. Drop them.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Reviewed-by: Steven Price <steven.price@....com>

> ---
>   drivers/gpu/drm/panfrost/panfrost_devfreq.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
> index 8ab025d0035f..97b5abc7c188 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
> @@ -170,10 +170,8 @@ void panfrost_devfreq_fini(struct panfrost_device *pfdev)
>   		pfdevfreq->opp_of_table_added = false;
>   	}
>   
> -	if (pfdevfreq->regulators_opp_table) {
> -		dev_pm_opp_put_regulators(pfdevfreq->regulators_opp_table);
> -		pfdevfreq->regulators_opp_table = NULL;
> -	}
> +	dev_pm_opp_put_regulators(pfdevfreq->regulators_opp_table);
> +	pfdevfreq->regulators_opp_table = NULL;
>   }
>   
>   void panfrost_devfreq_resume(struct panfrost_device *pfdev)
>