[PATCH 09/11] drm/mediatek: add missing of_node_put

From: Julia Lawall
Date: Thu Sep 07 2023 - 13:17:18 EST


for_each_child_of_node performs an of_node_get on each
iteration, so a break out of the loop requires an
of_node_put.

This was done using the Coccinelle semantic patch
iterators/for_each_child.cocci

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxxx>

---
drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 4 +++-
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)

diff -u -p a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -377,8 +377,10 @@ static bool mtk_drm_get_all_drm_priv(str
if (all_drm_priv[cnt] && all_drm_priv[cnt]->mtk_drm_bound)
cnt++;

- if (cnt == MAX_CRTC)
+ if (cnt == MAX_CRTC) {
+ of_node_put(node);
break;
+ }
}

if (drm_priv->data->mmsys_dev_num == cnt) {
diff -u -p a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -436,8 +436,10 @@ static int ovl_adaptor_comp_init(struct
}

comp_pdev = of_find_device_by_node(node);
- if (!comp_pdev)
+ if (!comp_pdev) {
+ of_node_put(node);
return -EPROBE_DEFER;
+ }

priv->ovl_adaptor_comp[id] = &comp_pdev->dev;