On Sat, Apr 18, 2020 at 08:07:00PM +0300, Dmitry Osipenko wrote:
> The OF node should be put before returning error in tegra_output_probe(),
> otherwise node's refcount will be leaked.
> 
> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
Reviewed-by: Sam Ravnborg <s...@ravnborg.org>
> ---
>  drivers/gpu/drm/tegra/output.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c
> index e36e5e7c2f69..a6a711d54e88 100644
> --- a/drivers/gpu/drm/tegra/output.c
> +++ b/drivers/gpu/drm/tegra/output.c
> @@ -102,10 +102,10 @@ int tegra_output_probe(struct tegra_output *output)
>       panel = of_parse_phandle(output->of_node, "nvidia,panel", 0);
>       if (panel) {
>               output->panel = of_drm_find_panel(panel);
> +             of_node_put(panel);
> +
>               if (IS_ERR(output->panel))
>                       return PTR_ERR(output->panel);
> -
> -             of_node_put(panel);
>       }
>  
>       output->edid = of_get_property(output->of_node, "nvidia,edid", &size);
> @@ -113,13 +113,12 @@ int tegra_output_probe(struct tegra_output *output)
>       ddc = of_parse_phandle(output->of_node, "nvidia,ddc-i2c-bus", 0);
>       if (ddc) {
>               output->ddc = of_find_i2c_adapter_by_node(ddc);
> +             of_node_put(ddc);
> +
>               if (!output->ddc) {
>                       err = -EPROBE_DEFER;
> -                     of_node_put(ddc);
>                       return err;
>               }
> -
> -             of_node_put(ddc);
>       }
>  
>       output->hpd_gpio = devm_gpiod_get_from_of_node(output->dev,
> -- 
> 2.26.0
> 
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