eal: fix doxygen for EAL cleanup

  Align rte_eal_cleanup return codes description to the rest of dpdk.

Fixes: aec9c13c5257 ("eal: add function to release internal resources")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 lib/librte_eal/include/rte_eal.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
  

On Fri, Oct 9, 2020 at 9:16 AM David Marchand <david.marchand@redhat.com> wrote:
>
> Align rte_eal_cleanup return codes description to the rest of dpdk.
>
> Fixes: aec9c13c5257 ("eal: add function to release internal resources")
> Cc: stable@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> ---
>  lib/librte_eal/include/rte_eal.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/lib/librte_eal/include/rte_eal.h b/lib/librte_eal/include/rte_eal.h
> index ddcf6a2e7a..e3c2ef185e 100644
> --- a/lib/librte_eal/include/rte_eal.h
> +++ b/lib/librte_eal/include/rte_eal.h
> @@ -130,8 +130,9 @@ int rte_eal_init(int argc, char **argv);
>   * be made. It is expected that common usage of this function is to call it
>   * just before terminating the process.
>   *
> - * @return 0 Successfully released all internal EAL resources
> - * @return -EFAULT There was an error in releasing all resources.
> + * @return
> + *  - 0 Successfully released all internal EAL resources.
> + *  - -EFAULT There was an error in releasing all resources.
>   */
>  int rte_eal_cleanup(void);
>

Side note, this function has never returned anything but 0.
Is this some stale doxygen comment from the introduction of this function?

I wonder what an application could do if the cleanup failed, anyway.
EAL will probably have error logs in such a situation?
  

09/10/2020 09:24, David Marchand:
> > --- a/lib/librte_eal/include/rte_eal.h
> > +++ b/lib/librte_eal/include/rte_eal.h
> > @@ -130,8 +130,9 @@ int rte_eal_init(int argc, char **argv);
> >   * be made. It is expected that common usage of this function is to call it
> >   * just before terminating the process.
> >   *
> > - * @return 0 Successfully released all internal EAL resources
> > - * @return -EFAULT There was an error in releasing all resources.
> > + * @return
> > + *  - 0 Successfully released all internal EAL resources.
> > + *  - -EFAULT There was an error in releasing all resources.
> >   */
> >  int rte_eal_cleanup(void);
> 
> Side note, this function has never returned anything but 0.
> Is this some stale doxygen comment from the introduction of this function?
> 
> I wonder what an application could do if the cleanup failed, anyway.
> EAL will probably have error logs in such a situation?

I think it's quite useful to programmatically know
whether the cleanup was done properly or not.
There's nothing to do except warn the user that a reboot may be needed :)

Note ethdev close is returning error now.
  

On Fri, Oct 9, 2020 at 9:16 AM David Marchand <david.marchand@redhat.com> wrote:
>
> Align rte_eal_cleanup return codes description to the rest of dpdk.
>
> Fixes: aec9c13c5257 ("eal: add function to release internal resources")
> Cc: stable@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Thomas Monjalon <thomas@monjalon.net>

Applied.