linux-kernel - Re: [PATCH] ASoC: fsl_asrc: Add initialization finishing check in runtime resume

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Message-ID: <CAGoOwPSOEmLN+0esj2QfoadN7JZ=TJeZymxcp3MPqP4oLok70w@mail.gmail.com>
Date:   Tue, 6 Sep 2022 04:41:59 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Shengjiu Wang <shengjiu.wang@...il.com>
Cc:     Shengjiu Wang <shengjiu.wang@....com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: fsl_asrc: Add initialization finishing check in
 runtime resume

On Tue, Sep 6, 2022 at 3:50 AM Shengjiu Wang <shengjiu.wang@...il.com> wrote:
>> >> > +       /* Wait for status of initialization for every enabled pairs */
>> >> > +       do {
>> >> > +               udelay(5);
>> >> > +               regmap_read(asrc->regmap, REG_ASRCFG, &reg);
>> >> > +               reg = (reg >> ASRCFG_INIRQi_SHIFT(0)) & 0x7;
>> >> > +       } while ((reg != ((asrctr >> ASRCTR_ASRCEi_SHIFT(0)) & 0x7)) && --retry);
>> >> > +
>> >> > +       /* FIXME: Doesn't treat initialization timeout as error */
>> >> > +       if (!retry)
>> >> > +               dev_warn(dev, "initialization isn't finished\n");
>> >>
>> >> Any reason why not just dev_err?
>> >
>> > Just hesitate to use dev_err. if use dev_err, then should return an error.
>> > May one of the pairs is finished, it still can continue.
>>
>> Makes sense. In that case, why "FIXME" :)

> Just want to have a record/note here, need to care about this warning.

"FIXME" feels like something is wrong and literally means that it is
waiting for a fix/solution. In your case, it's not waiting for a fix
at all, but just an annotation? So, shouldn't it be just "Note:"?