On Wed, Aug 10, 2022 at 10:37 AM Daniel Vetter <daniel@xxxxxxxx> wrote:
>
> On Mon, Jul 11, 2022 at 09:15:50PM +0800, Liang He wrote:
> > The reference 'child' in the iteration of for_each_available_child_of_node()
> > is only escaped out into a local variable which is only used to check
> > its value. So we still need to the of_node_put() when breaking of the
> > for_each_available_child_of_node() which will automatically increase
> > and decrease the refcount.
> >
> > Fixes: ca454bd42dc2 ("drm/pl111: Support the Versatile Express")
> > Signed-off-by: Liang He <windhl@xxxxxxx>
> > ---
> >
> > As 'Check-after-Put' has been widely accepted in kernel source, we just
> > use it. If the maintainer thinks it is harmful, I'd like also to use
> > 'Check-and-Put' coding style but with a bit more work.
> >
> > drivers/gpu/drm/pl111/pl111_versatile.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/pl111/pl111_versatile.c b/drivers/gpu/drm/pl111/pl111_versatile.c
> > index bdd883f4f0da..963a5d5e6987 100644
> > --- a/drivers/gpu/drm/pl111/pl111_versatile.c
> > +++ b/drivers/gpu/drm/pl111/pl111_versatile.c
> > @@ -402,6 +402,7 @@ static int pl111_vexpress_clcd_init(struct device *dev, struct device_node *np,
> > if (of_device_is_compatible(child, "arm,pl111")) {
> > has_coretile_clcd = true;
> > ct_clcd = child;
> > + of_node_put(child);
>
> The same issue seems to exist right below in the next break? Can you pls
> respin with that included?
It has a put already.
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
