Re: [PATCH] net: microchip: sparx5: Fix missing destroy_workqueue of mact_queue

From: Pavan Chebbi
Date: Fri Dec 02 2022 - 05:03:36 EST


On Fri, Dec 2, 2022 at 1:36 PM Pavan Chebbi <pavan.chebbi@xxxxxxxxxxxx> wrote:
>
> On Thu, Dec 1, 2022 at 6:57 PM Qiheng Lin <linqiheng@xxxxxxxxxx> wrote:
> >
> > The mchp_sparx5_probe() won't destroy workqueue created by
> > create_singlethread_workqueue() in sparx5_start() when later
> > inits failed. Add destroy_workqueue in the cleanup_ports case,
> > also add it in mchp_sparx5_remove()
> >
> > Signed-off-by: Qiheng Lin <linqiheng@xxxxxxxxxx>
> > ---
> > drivers/net/ethernet/microchip/sparx5/sparx5_main.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > index eeac04b84638..b6bbb3c9bd7a 100644
> > --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > @@ -887,6 +887,8 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
> >
> > cleanup_ports:
> > sparx5_cleanup_ports(sparx5);
> > + if (sparx5->mact_queue)
> > + destroy_workqueue(sparx5->mact_queue);
>
> Would be better if you destroy inside sparx5_start() before returning failure.
>

Alternatively you could add the destroy inside sparx5_cleanup_ports()
that will cover all error exits?

> > cleanup_config:
> > kfree(configs);
> > cleanup_pnode:
> > @@ -911,6 +913,7 @@ static int mchp_sparx5_remove(struct platform_device *pdev)
> > sparx5_cleanup_ports(sparx5);
> > /* Unregister netdevs */
> > sparx5_unregister_notifier_blocks(sparx5);
> > + destroy_workqueue(sparx5->mact_queue);
> >
> > return 0;
> > }
> > --
> > 2.32.0
> >

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