linux-kernel - Re: [PATCH v1 net-next 2/2] net: mscc: ocelot: check return values of writes during reset

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Date:   Fri, 16 Sep 2022 16:12:14 -0700
From:   Colin Foster <colin.foster@...advantage.com>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>
Subject: Re: [PATCH v1 net-next 2/2] net: mscc: ocelot: check return values
 of writes during reset

On Fri, Sep 16, 2022 at 10:40:10PM +0000, Vladimir Oltean wrote:
> On Fri, Sep 16, 2022 at 12:13:49PM -0700, Colin Foster wrote:
> > -	regmap_field_write(ocelot->regfields[SYS_RESET_CFG_MEM_ENA], 1);
> > -	regmap_field_write(ocelot->regfields[SYS_RESET_CFG_CORE_ENA], 1);
> > +	err = regmap_field_write(ocelot->regfields[SYS_RESET_CFG_MEM_ENA], 1);
> > +	if (err)
> > +		return err;
> >  
> > -	return 0;
> > +	err = regmap_field_write(ocelot->regfields[SYS_RESET_CFG_CORE_ENA], 1);
> > +
> > +	return err;
> >  }
> 
> A kernel janitor will come and patch this up to:
> 
> 	return regmap_field_write(ocelot->regfields[SYS_RESET_CFG_CORE_ENA], 1);
> 
> so it's better to do it yourself.

Good catch. That and removing the IS_ERR_VALUE macro from patch 1 and
I'll resubmit after the weekend.