struct pinctrl_desc *pctl_desc;
        char *pin_names;
        int name_len = strlen("GP_xx") + 1;
-       int i, j, ret;
+       int i, j;
 
        pmap = devm_kzalloc(&pdev->dev, sizeof(*pmap), GFP_KERNEL);
        if (!pmap)
 
        pmap->dev = &pdev->dev;
 
-       pmap->pctl = pinctrl_register(pctl_desc, &pdev->dev, pmap);
+       pmap->pctl = devm_pinctrl_register(&pdev->dev, pctl_desc, pmap);
        if (IS_ERR(pmap->pctl)) {
                dev_err(&pdev->dev, "pinctrl driver registration failed\n");
                return PTR_ERR(pmap->pctl);
        }
 
-       ret = dc_gpiochip_add(pmap, pdev->dev.of_node);
-       if (ret < 0) {
-               pinctrl_unregister(pmap->pctl);
-               return ret;
-       }
-
-       return 0;
+       return dc_gpiochip_add(pmap, pdev->dev.of_node);
 }
 
 static int dc_pinctrl_remove(struct platform_device *pdev)
 {
        struct dc_pinmap *pmap = platform_get_drvdata(pdev);
 
-       pinctrl_unregister(pmap->pctl);
        gpiochip_remove(&pmap->chip);
 
        return 0;