linux-kernel - Re: [PATCH 07/13] opp: Allow _generic_set_opp_clk

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Message-ID: <20210122043506.lm6yiefzlyubq5my@vireshk-i7>
Date:   Fri, 22 Jan 2021 10:05:06 +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>,
        Sibi Sankar <sibis@...eaurora.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 07/13] opp: Allow _generic_set_opp_clk_only() to work for
 non-freq devices

On 21-01-21, 23:26, Dmitry Osipenko wrote:
> 21.01.2021 14:17, Viresh Kumar пишет:
> > In order to avoid conditional statements at the caller site, this patch
> > updates _generic_set_opp_clk_only() to work for devices that don't
> > change frequency (like power domains, etc.). Return 0 if the clk pointer
> > passed to this routine is not valid.
> > 
> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> > ---
> ...
> 
> Hello Viresh,
> 
> Thank you very much for yours effort! I gave a quick test to this series
> and instantly found one small issue in this patch.
> 
> > +	/* We may reach here for devices which don't change frequency */
> > +	if (unlikely(!clk))
> 
> I replaced dev_pm_opp_set_voltage() with dev_pm_opp_set_opp() in the
> Tegra PD driver and got a crash, which happens because the above line
> should be:
> 
> 	if (IS_ERR(clk))

Fixed, thanks.

-- 
viresh