linux-kernel - Re: [PATCH V2] opp: Prepare for ->set_opp() helper to work without regulators

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Fri, 22 Jan 2021 08:35:06 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] opp: Prepare for ->set_opp() helper to work without
 regulators

On 22-01-21, 00:02, Dmitry Osipenko wrote:
> 21.01.2021 14:30, Viresh Kumar пишет:
> > @@ -1952,9 +1930,16 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
> >  	for (i = opp_table->regulator_count - 1; i >= 0; i--)
> >  		regulator_put(opp_table->regulators[i]);
> >  
> > -	_free_set_opp_data(opp_table);
> > +	mutex_lock(&opp_table->lock);
> > +	if (opp_table->set_opp_data) {
> > +		opp_table->set_opp_data->old_opp.supplies = NULL;
> > +		opp_table->set_opp_data->new_opp.supplies = NULL;
> > +	}
> > +	mutex_unlock(&opp_table->lock);
> >  
> > +	kfree(opp_table->sod_supplies);
> >  	kfree(opp_table->regulators);
> > +	opp_table->sod_supplies = NULL;
> >  	opp_table->regulators = NULL;
> >  	opp_table->regulator_count = -1;
> 
> The sod_supplies should be unset under the lock.

Fixed, thanks.

-- 
viresh