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path: root/drivers/gpu/drm/tegra/hub.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/hub.c')
-rw-r--r--drivers/gpu/drm/tegra/hub.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 8183e617bf6b..22a03f7ffdc1 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -149,7 +149,9 @@ int tegra_display_hub_prepare(struct tegra_display_hub *hub)
for (i = 0; i < hub->soc->num_wgrps; i++) {
struct tegra_windowgroup *wgrp = &hub->wgrps[i];
- tegra_windowgroup_enable(wgrp);
+ /* Skip orphaned window group whose parent DC is disabled */
+ if (wgrp->parent)
+ tegra_windowgroup_enable(wgrp);
}
return 0;
@@ -166,7 +168,9 @@ void tegra_display_hub_cleanup(struct tegra_display_hub *hub)
for (i = 0; i < hub->soc->num_wgrps; i++) {
struct tegra_windowgroup *wgrp = &hub->wgrps[i];
- tegra_windowgroup_disable(wgrp);
+ /* Skip orphaned window group whose parent DC is disabled */
+ if (wgrp->parent)
+ tegra_windowgroup_disable(wgrp);
}
}
@@ -944,6 +948,15 @@ static int tegra_display_hub_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to register host1x client: %d\n",
err);
+ err = devm_of_platform_populate(&pdev->dev);
+ if (err < 0)
+ goto unregister;
+
+ return err;
+
+unregister:
+ host1x_client_unregister(&hub->client);
+ pm_runtime_disable(&pdev->dev);
return err;
}