drm/mediatek: unbind components in mtk_drm_unbind()

[ Upstream commit f0fd848342802bc0f74620d387eead53e8905804 ]

Unbinding components (i.e. mtk_dsi and mtk_disp_ovl/rdma/color) will
trigger master(mtk_drm)'s .unbind(), and currently mtk_drm's unbind
won't actually unbind components. During the next bind,
mtk_drm_kms_init() is called, and the components are added back.

.unbind() should call mtk_drm_kms_deinit() to unbind components.

And since component_master_del() in .remove() will trigger .unbind(),
which will also unregister device, it's fine to remove original functions
called here.

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 47ec604..bbe57ad 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -390,6 +390,7 @@ static void mtk_drm_unbind(struct device *dev)
        struct mtk_drm_private *private = dev_get_drvdata(dev);
 
        drm_dev_unregister(private->drm);
+       mtk_drm_kms_deinit(private->drm);
        drm_dev_put(private->drm);
        private->drm = NULL;
 }
@@ -559,13 +560,8 @@ err_node:
 static int mtk_drm_remove(struct platform_device *pdev)
 {
        struct mtk_drm_private *private = platform_get_drvdata(pdev);
-       struct drm_device *drm = private->drm;
        int i;
 
-       drm_dev_unregister(drm);
-       mtk_drm_kms_deinit(drm);
-       drm_dev_put(drm);
-
        component_master_del(&pdev->dev, &mtk_drm_ops);
        pm_runtime_disable(&pdev->dev);
        of_node_put(private->mutex_node);