netdev - Re: [PATCH net v1] net: taprio: Fix returning EINVAL when configuring without flags

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Date:   Wed, 9 Oct 2019 02:58:40 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Vinicius Costa Gomes <vinicius.gomes@...el.com>
Cc:     netdev <netdev@...r.kernel.org>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH net v1] net: taprio: Fix returning EINVAL when configuring
 without flags

Hi Vinicius,

On Wed, 9 Oct 2019 at 02:19, Vinicius Costa Gomes
<vinicius.gomes@...el.com> wrote:
>
> When configuring a taprio instance if "flags" is not specified (or
> it's zero), taprio currently replies with an "Invalid argument" error.
>
> So, set the return value to zero after we are done with all the
> checks.
>
> Fixes: 9c66d1564676 ("taprio: Add support for hardware offloading")
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
> ---

You mean clockid, not flags, right?
Otherwise the patch looks correct, sorry for the bug.
Once you fix the commit message:

Acked-by: Vladimir Oltean <olteanv@...il.com>

>  net/sched/sch_taprio.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
> index 68b543f85a96..6719a65169d4 100644
> --- a/net/sched/sch_taprio.c
> +++ b/net/sched/sch_taprio.c
> @@ -1341,6 +1341,10 @@ static int taprio_parse_clockid(struct Qdisc *sch, struct nlattr **tb,
>                 NL_SET_ERR_MSG(extack, "Specifying a 'clockid' is mandatory");
>                 goto out;
>         }
> +
> +       /* Everything went ok, return success. */
> +       err = 0;
> +
>  out:
>         return err;
>  }
> --
> 2.23.0
>