linux-kernel - Re: [PATCH net-next 2/5] net/sched: taprio: replace tc_taprio_qopt_offload

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Message-ID: <20230531171029.gxi3um3bvmjjhvqk@skbuf>
Date:   Wed, 31 May 2023 20:10:29 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Gerhard Engleder <gerhard@...leder-embedded.com>,
        Amritha Nambiar <amritha.nambiar@...el.com>,
        Ferenc Fejes <ferenc.fejes@...csson.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Roger Quadros <rogerq@...nel.org>,
        Pranavi Somisetty <pranavi.somisetty@....com>,
        Harini Katakam <harini.katakam@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Michael Sit Wei Hong <michael.wei.hong.sit@...el.com>,
        Mohammad Athari Bin Ismail <mohammad.athari.ismail@...el.com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Jacob Keller <jacob.e.keller@...el.com>,
        linux-kernel@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
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        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        intel-wired-lan@...ts.osuosl.org,
        Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
Subject: Re: [PATCH net-next 2/5] net/sched: taprio: replace
 tc_taprio_qopt_offload :: enable with a "cmd" enum

On Wed, May 31, 2023 at 07:08:10PM +0200, Simon Horman wrote:
> > --- a/drivers/net/dsa/ocelot/felix_vsc9959.c
> > +++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
> 
> ...
> 
> > @@ -1423,6 +1423,8 @@ static int vsc9959_qos_port_tas_set(struct ocelot *ocelot, int port,
> >  
> >  		mutex_unlock(&ocelot->tas_lock);
> >  		return 0;
> > +	} else if (taprio->cmd != TAPRIO_CMD_REPLACE) {
> 
> Hi Vladimir,
> 
> Do you need to 'mutex_unlock(&ocelot->tas_lock)' here?

Yup. Nice catch, thanks. I reviewed this a couple of times myself but I
missed it. I'll send a fixup patch later today, hopefully.

> > +		return -EOPNOTSUPP;
> >  	}
> >  
> >  	ret = ocelot_port_mqprio(ocelot, port, &taprio->mqprio);
> 
> ...