linux-kernel - Re: [PATCH 3/3] staging: lustre: lnet/selftest: don't ignore status from lstcon_test

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Date:   Mon, 26 Feb 2018 14:48:48 +0000 (GMT)
From:   James Simmons <jsimmons@...radead.org>
To:     NeilBrown <neilb@...e.com>
cc:     devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH 3/3] staging: lustre: lnet/selftest: don't ignore status
 from lstcon_test_add


> If lstcon_test_add sets 'ret' (passed by reference) to 1,
> then lst_test_add_ioctl() ignores the return value.
> This isn't justified - the return value must be zero for 'ret'
> to be meaningful.
> 
> Signed-off-by: NeilBrown <neilb@...e.com>

Reviewed-by: James Simmons <jsimmons@...radead.org>

> ---
>  drivers/staging/lustre/lnet/selftest/conctl.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/lustre/lnet/selftest/conctl.c b/drivers/staging/lustre/lnet/selftest/conctl.c
> index 51497cf9a832..a2d8092bdeb7 100644
> --- a/drivers/staging/lustre/lnet/selftest/conctl.c
> +++ b/drivers/staging/lustre/lnet/selftest/conctl.c
> @@ -670,7 +670,7 @@ static int lst_test_add_ioctl(struct lstio_test_args *args)
>  			     args->lstio_tes_param_len,
>  			     &ret, args->lstio_tes_resultp);
>  
> -	if (ret)
> +	if (!rc && ret)
>  		rc = (copy_to_user(args->lstio_tes_retp, &ret,
>  				   sizeof(ret))) ? -EFAULT : 0;
>  out:
> 
> 
>