...
> +struct tegra_mc *devm_tegra_get_memory_controller(struct device *dev)
> +{
> + struct platform_device *pdev;
> + struct device_node *np;
> + struct tegra_mc *mc;
> + int err;
> +
> + np = of_find_matching_node_and_match(NULL, tegra_mc_of_match, NULL);
> + if (!np)
> + return ERR_PTR(-ENOENT);
> +
> + pdev = of_find_device_by_node(np);
> + of_node_put(np);
> + if (!pdev)
> + return ERR_PTR(-ENODEV);
> +
> + mc = platform_get_drvdata(pdev);
> + if (!mc) {
> + put_device(mc->dev);
This should be put_device(&pdev->dev). Please always be careful while
copying someones else code :)
