On Tue, 2025-07-22 at 11:27 +0200, Johan Hovold wrote:

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Make sure to drop the references to the sibling platform devices and their child drm devices taken by of_find_device_by_node() and device_find_child() when initialising the driver data during bind().

Reviewed-by: CK Hu ck.hu@mediatek.com

Fixes: 1ef7ed48356c ("drm/mediatek: Modify mediatek-drm for mt8195 multi mmsys support") Cc: stable@vger.kernel.org # 6.4 Cc: Nancy.Lin nancy.lin@mediatek.com Signed-off-by: Johan Hovold johan@kernel.org

---

drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 7c0c12dde488..33b83576af7e 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -395,10 +395,12 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) continue;

            drm_dev = device_find_child(&pdev->dev, NULL, mtk_drm_match);

•           put_device(&pdev->dev);
            if (!drm_dev)
                    continue;
  
            temp_drm_priv = dev_get_drvdata(drm_dev);
  

•           put_device(drm_dev);
            if (!temp_drm_priv)
                    continue;
  
  

-- 2.49.1