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Message-ID: <20210118081147.bfk2wgu5rabqnvku@vireshk-i7>
Date: Mon, 18 Jan 2021 13:41:47 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Dmitry Osipenko <digetx@...il.com>
Cc: Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Mark Brown <broonie@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Peter Geis <pgwipeout@...il.com>,
Nicolas Chauvet <kwizart@...il.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Kevin Hilman <khilman@...nel.org>,
Peter De Schrijver <pdeschrijver@...dia.com>,
Viresh Kumar <vireshk@...nel.org>,
Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
Yangtao Li <tiny.windzz@...il.com>,
Matt Merhar <mattmerhar@...tonmail.com>,
linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 02/12] opp: Filter out OPPs based on availability of a
required-OPP
On 18-01-21, 03:55, Dmitry Osipenko wrote:
> A required OPP may not be available, and thus, all OPPs which are using
> this required OPP should be unavailable too.
>
> Tested-by: Peter Geis <pgwipeout@...il.com>
> Tested-by: Nicolas Chauvet <kwizart@...il.com>
> Tested-by: Matt Merhar <mattmerhar@...tonmail.com>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
> drivers/opp/core.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/opp/core.c b/drivers/opp/core.c
> index 48618ff3e99e..7b4d07279638 100644
> --- a/drivers/opp/core.c
> +++ b/drivers/opp/core.c
> @@ -1522,6 +1522,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
> struct opp_table *opp_table, bool rate_not_available)
> {
> struct list_head *head;
> + unsigned int i;
> int ret;
>
> mutex_lock(&opp_table->lock);
> @@ -1547,6 +1548,16 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
> __func__, new_opp->rate);
> }
>
> + for (i = 0; i < opp_table->required_opp_count; i++) {
> + if (new_opp->required_opps[i]->available)
> + continue;
> +
> + new_opp->available = false;
> + dev_warn(dev, "%s: OPP not supported by required OPP %pOF (%lu)\n",
> + __func__, new_opp->required_opps[i]->np, new_opp->rate);
> + break;
> + }
> +
> return 0;
> }
Applied. Thanks.
Though I am concerned about who will enable this back again if the
required-opp comes back. And I am not sure if we should even care
about that.
--
viresh
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