omapdss_find_dss_of_node() calls of_find_compatible_node() to get device
node. of_find_compatible_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() in later error path and normal path.

Fixes: e0c827aca0730 ("drm/omap: Populate DSS children in omapdss driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 arch/arm/mach-omap2/display.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 21413a9b7b6c..ed2cb2649cf6 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -259,11 +259,13 @@ static int __init omapdss_init_of(void)
 
 	if (!pdev) {
 		pr_err("Unable to find DSS platform device\n");
+		of_node_put(node);
 		return -ENODEV;
 	}
 
 	r = of_platform_populate(node, NULL, NULL, &pdev->dev);
 	put_device(&pdev->dev);
+	of_node_put(node);
 	if (r) {
 		pr_err("Unable to populate DSS submodule devices\n");
 		return r;
-- 
2.25.1

Hello Lin,

Thank you for the patch.

On Wed, Jun 01, 2022 at 08:48:58AM +0400, Miaoqian Lin wrote:
> omapdss_find_dss_of_node() calls of_find_compatible_node() to get device
> node. of_find_compatible_node() returns a node pointer with refcount
> incremented, we should use of_node_put() on it when done.
> Add missing of_node_put() in later error path and normal path.
> 
> Fixes: e0c827aca0730 ("drm/omap: Populate DSS children in omapdss driver")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  arch/arm/mach-omap2/display.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
> index 21413a9b7b6c..ed2cb2649cf6 100644
> --- a/arch/arm/mach-omap2/display.c
> +++ b/arch/arm/mach-omap2/display.c
> @@ -259,11 +259,13 @@ static int __init omapdss_init_of(void)
>  
>  	if (!pdev) {
>  		pr_err("Unable to find DSS platform device\n");
> +		of_node_put(node);
>  		return -ENODEV;
>  	}
>  
>  	r = of_platform_populate(node, NULL, NULL, &pdev->dev);
>  	put_device(&pdev->dev);
> +	of_node_put(node);
>  	if (r) {
>  		pr_err("Unable to populate DSS submodule devices\n");
>  		return r;

-- 
Regards,

Laurent Pinchart

* Laurent Pinchart <laurent.pinchart@ideasonboard.com> [220601 06:46]:
> Hello Lin,
> 
> Thank you for the patch.
> 
> On Wed, Jun 01, 2022 at 08:48:58AM +0400, Miaoqian Lin wrote:
> > omapdss_find_dss_of_node() calls of_find_compatible_node() to get device
> > node. of_find_compatible_node() returns a node pointer with refcount
> > incremented, we should use of_node_put() on it when done.
> > Add missing of_node_put() in later error path and normal path.
> > 
> > Fixes: e0c827aca0730 ("drm/omap: Populate DSS children in omapdss driver")
> > Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Thanks applying this into omap-for-v5.20/soc.

Regards,

Tony