linux-kernel - Re: [Patch net-next v1 11/12] net: dsa: microchip: ptp: add periodic output signal

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Message-ID: <CALs4sv2+ureQ8JttKZf0-re40fd5PzfHREnJ709DGwotsySMsw@mail.gmail.com>
Date:   Tue, 29 Nov 2022 15:27:00 +0530
From:   Pavan Chebbi <pavan.chebbi@...adcom.com>
To:     Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        woojung.huh@...rochip.com, UNGLinuxDriver@...rochip.com,
        andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, linux@...linux.org.uk,
        Tristram.Ha@...rochip.com, richardcochran@...il.com,
        ceggers@...i.de
Subject: Re: [Patch net-next v1 11/12] net: dsa: microchip: ptp: add periodic
 output signal

On Tue, Nov 29, 2022 at 2:23 PM Pavan Chebbi <pavan.chebbi@...adcom.com> wrote:
>
> On Mon, Nov 28, 2022 at 4:05 PM Arun Ramadoss
> <arun.ramadoss@...rochip.com> wrote:
>
> > +static int ksz_ptp_enable(struct ptp_clock_info *ptp,
> > +                         struct ptp_clock_request *req, int on)
> > +{
> > +       struct ksz_ptp_data *ptp_data = ptp_caps_to_data(ptp);
> > +       struct ksz_device *dev = ptp_data_to_ksz_dev(ptp_data);
> > +       struct ptp_perout_request *request = &req->perout;
> > +       int ret;
> > +
> > +       switch (req->type) {
> > +       case PTP_CLK_REQ_PEROUT:
> > +               if (request->index > ptp->n_per_out)
> > +                       return -EINVAL;
>
> Should be -EOPNOTSUPP ? I see some other places where -EOPNOTSUPP is
> more appropriate.
>
> > +
> > +               mutex_lock(&ptp_data->lock);
> > +               ret = ksz_ptp_enable_perout(dev, request, on);
> > +               mutex_unlock(&ptp_data->lock);
> > +               break;
> > +       default:
> > +               return -EINVAL;

OK I really meant here.

> > +       }
> > +
> > +       return ret;
> > +}
> > +
> >  /*  Function is pointer to the do_aux_work in the ptp_clock capability */
> >  static long ksz_ptp_do_aux_work(struct ptp_clock_info *ptp)
> >  {
> > @@ -508,6 +823,8 @@ static const struct ptp_clock_info ksz_ptp_caps = {
> >         .adjfine        = ksz_ptp_adjfine,
> >         .adjtime        = ksz_ptp_adjtime,
> >         .do_aux_work    = ksz_ptp_do_aux_work,
> > +       .enable         = ksz_ptp_enable,
> > +       .n_per_out      = 3,
> >  };
> >

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