Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <1662373788-19561-1-git-send-email-shengjiu.wang@nxp.com>
 <CAGoOwPQomcnO5dhkT9DBynwJo8LfVvuuwj5AYNpv0KhAGSWLEw@mail.gmail.com> <CAA+D8APOL1Qx0fAhyajXXzh0_tqEmDJoDBh3Xgo6uYNhV0usBw@mail.gmail.com>
In-Reply-To: <CAA+D8APOL1Qx0fAhyajXXzh0_tqEmDJoDBh3Xgo6uYNhV0usBw@mail.gmail.com>
From:   Nicolin Chen <nicoleotsuka@gmail.com>
Date:   Tue, 6 Sep 2022 02:50:23 -0700
Message-ID: <CAGoOwPQfkT2ptdt6mBTAgPfN0NOoR4KfdLE9B2AoL+Qn6bWdFw@mail.gmail.com>
Subject: Re: [PATCH] ASoC: fsl_asrc: Add initialization finishing check in
 runtime resume
To:     Shengjiu Wang <shengjiu.wang@gmail.com>
Cc:     Shengjiu Wang <shengjiu.wang@nxp.com>,
        Xiubo Li <Xiubo.Lee@gmail.com>,
        Fabio Estevam <festevam@gmail.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org,
        linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Mon, Sep 5, 2022 at 6:54 PM Shengjiu Wang <shengjiu.wang@gmail.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" :)