netdev - Re: [PATCH net-next v2 11/11] devlink: convert most of devlink_fmsg

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Date: Wed, 18 Oct 2023 18:10:55 +0200
From: Simon Horman <horms@...nel.org>
To: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Cc: Jiri Pirko <jiri@...nulli.us>, 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>,
	Shannon Nelson <shannon.nelson@....com>,
	Michael Chan <michael.chan@...adcom.com>,
	Cai Huoqing <cai.huoqing@...ux.dev>,
	George Cherian <george.cherian@...vell.com>,
	Danielle Ratson <danieller@...dia.com>,
	Moshe Shemesh <moshe@...dia.com>,
	Saeed Mahameed <saeedm@...dia.com>,
	Ariel Elior <aelior@...vell.com>,
	Manish Chopra <manishc@...vell.com>,
	Igor Russkikh <irusskikh@...vell.com>,
	Coiby Xu <coiby.xu@...il.com>,
	Brett Creeley <brett.creeley@....com>,
	Sunil Goutham <sgoutham@...vell.com>,
	Linu Cherian <lcherian@...vell.com>,
	Geetha sowjanya <gakula@...vell.com>,
	Jerin Jacob <jerinj@...vell.com>, hariprasad <hkelam@...vell.com>,
	Subbaraya Sundeep <sbhatta@...vell.com>,
	Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>,
	Eran Ben Elisha <eranbe@...dia.com>, Aya Levin <ayal@...lanox.com>,
	Leon Romanovsky <leon@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 11/11] devlink: convert most of
 devlink_fmsg_*() to return void

On Tue, Oct 17, 2023 at 12:53:41PM +0200, Przemek Kitszel wrote:

...

> diff --git a/net/devlink/health.c b/net/devlink/health.c
> index 3858a436598e..f4a6de576b6c 100644
> --- a/net/devlink/health.c
> +++ b/net/devlink/health.c
> @@ -566,17 +566,15 @@ static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
>  	if (!reporter->dump_fmsg)
>  		return -ENOMEM;
>  
> -	err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
> -	if (err)
> -		goto dump_err;
> +	devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
>  
>  	err = reporter->ops->dump(reporter, reporter->dump_fmsg,
>  				  priv_ctx, extack);
>  	if (err)
>  		goto dump_err;
>  
> -	err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
> -	if (err)
> +	devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
> +	if (reporter->dump_fmsg->err)

Hi Przemek,

Smatch warns that err is not set to an error value here.

>  		goto dump_err;
>  
>  	reporter->dump_ts = jiffies;

...