linux-kernel - Re: [PATCH 1/2] cpuidle: dt: Return the correct numbers of parsed idle states

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Message-ID: <20221025114308.4kevtiz5heoekgz3@bogus>
Date:   Tue, 25 Oct 2022 12:43:08 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     "Rafael J . Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm@...r.kernel.org,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] cpuidle: dt: Return the correct numbers of parsed
 idle states

On Fri, Oct 21, 2022 at 05:10:12PM +0200, Ulf Hansson wrote:
> While we correctly skips to initialize an idle state from a disabled idle
> state node in DT, the returned value from dt_init_idle_driver() don't get
> adjusted accordingly. Instead the number of found idle state nodes are
> returned, while the callers are expecting the number of successfully
> initialized idle states from DT.
> 
> This leads to cpuidle drivers unnecessarily continues to initialize their
> idle state specific data. Moreover, in the case when all idle states have
> been disabled in DT, we would end up registering a cpuidle driver, rather
> than relying on the default arch specific idle call.
>

Makes sense.

Reviewed-by: Sudeep Holla <sudeep.holla@....com>

-- 
Regards,
Sudeep