Subject: Re: [PATCH net-next v2 11/11] devlink: convert most of devlink_fmsg_*() to return void

From: Simon Horman <[email-masked]>
Date: Wed, 18 Oct 2023 18:10:55 +0200

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;

...