linux-kernel - Re: [PATCH] PM / OPP: 'UNKNOWN' status of opp-table->shared

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Date:	Thu, 16 Jun 2016 18:18:18 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	"Rafael J. Wysocki" <rafael@...nel.org>
Cc:	Rafael Wysocki <rjw@...ysocki.net>, acourbot@...dia.com,
	Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alexandre Courbot <gnurou@...il.com>,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH] PM / OPP: 'UNKNOWN' status of opp-table->shared

On 16-06-16, 14:25, Rafael J. Wysocki wrote:
> On Thu, Jun 16, 2016 at 8:33 AM, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> > +                       if (opp_table->shared_opp == OPP_TABLE_IS_SHARED)
> > +                               return opp_table;
> > +
> > +                       return NULL;
> 
> That still can be
> 
> return opp_table->shared_opp == OPP_TABLE_IS_SHARED ? opp_table : NULL;
> 
> >                 }
> >         }
> >

> > +       if (of_property_read_bool(opp_np, "opp-shared"))
> > +               opp_table->shared_opp = OPP_TABLE_IS_SHARED;
> > +       else
> > +               opp_table->shared_opp = OPP_TABLE_IS_NOT_SHARED;
> 
> And here
> 
> opp_table->shared_opp = of_property_read_bool(opp_np, "opp-shared") ?
>                                             OPP_TABLE_IS_SHARED :
> OPP_TABLE_IS_NOT_SHARED;

Conditional statement for both these cases is getting very long and
if/else looks much more readable. And so I would like to stick with
that, if you allow.

> > +#define OPP_TABLE_IS_NOT_SHARED                0
> > +#define OPP_TABLE_IS_SHARED            1
> > +#define OPP_TABLE_SHARED_UNKNOWN       UINT_MAX
> 

> Please change this into an enum type.
 
> Besides, I'd call them OPP_TABLE_ACCESS_SHARED,
> OPP_TABLE_ACCESS_EXCLUSIVE, OPP_TABLE_ACCESS_UNKNOWN or similar, but I
> don't care that much either.

Sure. This can be done.

-- 
viresh