linux-kernel - Re: [PATCH V4 10/10] PM / OPP: Don't assume platform doesn't have 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:   Mon, 28 Nov 2016 17:18:10 -0800
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rafael Wysocki <rjw@...ysocki.net>, nm@...com,
        Viresh Kumar <vireshk@...nel.org>,
        linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>, robh@...nel.org,
        d-gerlach@...com, broonie@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH V4 10/10] PM / OPP: Don't assume platform doesn't have
 regulators

On 11/24, Viresh Kumar wrote:
> If the regulators aren't set explicitly by the platform, the OPP core
> assumes that the platform doesn't have any regulator and uses the
> clk-only callback.
> 
> If the platform failed to register a regulator with the core, then this
> can turn out to be a dangerous assumption as the OPP core will try to
> change clk without changing regulators.
> 
> Handle that properly by making sure that the DT didn't have any entries
> for supply voltages as well.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---

Reviewed-by: Stephen Boyd <sboyd@...eaurora.org>

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project