linux-kernel - Re: [PATCH v5 3/3] PM / AVS: SVS: Introduce SVS engine

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Date:   Fri, 1 Nov 2019 14:10:02 +0800
From:   Roger Lu <roger.lu@...iatek.com>
To:     Pi-Hsun Shih <pihsun@...omium.org>
CC:     Kevin Hilman <khilman@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Nicolas Boichat <drinkcat@...gle.com>,
        Stephen Boyd <sboyd@...nel.org>,
        "Fan Chen" <fan.chen@...iatek.com>,
        HenryC Chen <HenryC.Chen@...iatek.com>, <yt.lee@...iatek.com>,
        Angus Lin <Angus.Lin@...iatek.com>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Nishanth Menon" <nm@...com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        "open list" <linux-kernel@...r.kernel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v5 3/3] PM / AVS: SVS: Introduce SVS engine

Dear Pi-Hsun,

Thanks for reminding me. I'll add dev_pm_opp_put(opp) in the next
patchset.

On Mon, 2019-10-21 at 15:51 +0800, Pi-Hsun Shih wrote:
> Hi Roger,
> 
> On Fri, Sep 6, 2019 at 6:06 PM Roger Lu <roger.lu@...iatek.com> wrote:
> > ...
> > +static int svs_resource_setup(struct mtk_svs *svs)
> > ...
> > +               for (i = 0, freq = (u32)-1; i < svsb->opp_count; i++, freq--) {
> > +                       opp = dev_pm_opp_find_freq_floor(svsb->dev, &freq);
> > +                       if (IS_ERR(opp)) {
> > +                               pr_err("%s: error opp entry!!, err = %ld\n",
> > +                                      svsb->name, PTR_ERR(opp));
> > +                               return PTR_ERR(opp);
> > +                       }
> > +
> > +                       svsb->opp_freqs[i] = freq;
> > +                       svsb->opp_volts[i] = dev_pm_opp_get_voltage(opp);
> > +                       svsb->freqs_pct[i] = percent(svsb->opp_freqs[i],
> > +                                                    svsb->freq_base) & 0xff;
> 
> Should have dev_pm_opp_put(opp); here.
Sure. Thanks.

> 
> > +               }
> > +       }
> > +
> > +       return 0;
> > +}
> > ...
> > +static int svs_status_proc_show(struct seq_file *m, void *v)
> > ...
> > +       for (i = 0, freq = (u32)-1; i < svsb->opp_count; i++, freq--) {
> > +               opp = dev_pm_opp_find_freq_floor(svsb->dev, &freq);
> > +               if (IS_ERR(opp)) {
> > +                       seq_printf(m, "%s: error opp entry!!, err = %ld\n",
> > +                                  svsb->name, PTR_ERR(opp));
> > +                       return PTR_ERR(opp);
> > +               }
> > +
> > +               seq_printf(m, "opp_freqs[%02u]: %lu, volts[%02u]: %lu, ",
> > +                          i, freq, i, dev_pm_opp_get_voltage(opp));
> > +               seq_printf(m, "svsb_volts[%02u]: 0x%x, freqs_pct[%02u]: %u\n",
> > +                          i, svsb->volts[i], i, svsb->freqs_pct[i]);
> 
> Same here.
Sure. Thanks.

> 
> > +       }
> > +
> > +       return 0;
> > +}
> > ...