linux-kernel - Re: [PATCH 4/7] ASoC: imx-audio-rpmsg: Add rpmsg

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Date:   Sun, 7 Feb 2021 17:49:41 +0800
From:   Shengjiu Wang <shengjiu.wang@...il.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Shengjiu Wang <shengjiu.wang@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, alsa-devel@...a-project.org,
        Timur Tabi <timur@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        linuxppc-dev@...ts.ozlabs.org, Xiubo Li <Xiubo.Lee@...il.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Takashi Iwai <tiwai@...e.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Fabio Estevam <festevam@...il.com>
Subject: Re: [PATCH 4/7] ASoC: imx-audio-rpmsg: Add rpmsg_driver for audio channel

On Fri, Feb 5, 2021 at 10:27 PM Mark Brown <broonie@...nel.org> wrote:
>
> On Fri, Feb 05, 2021 at 02:57:27PM +0800, Shengjiu Wang wrote:
>
> > +     /* TYPE C is notification from M core */
> > +     if (r_msg->header.type == MSG_TYPE_C) {
> > +             if (r_msg->header.cmd == TX_PERIOD_DONE) {
>
> > +             } else if (r_msg->header.cmd == RX_PERIOD_DONE) {
>
> A switch statement would be clearer and more extensible...
>
> > +     /* TYPE B is response msg */
> > +     if (r_msg->header.type == MSG_TYPE_B) {
> > +             memcpy(&info->r_msg, r_msg, sizeof(struct rpmsg_r_msg));
> > +             complete(&info->cmd_complete);
> > +     }
>
> ...and make this flow clearer for example.  Do we need to warn on
> unknown messages?

Thanks for reviewing. I will update them.

Best regards
wang shengjiu