serial: qcom_geni_serial: Convert to use resource-managed OPP API

Use resource-managed OPP API to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/tty/serial/qcom_geni_serial.c

@@ -1433,14 +1433,14 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 	if (of_property_read_bool(pdev->dev.of_node, "cts-rts-swap"))
 		port->cts_rts_swap = true;
 
-	port->se.opp_table = dev_pm_opp_set_clkname(&pdev->dev, "se");
-	if (IS_ERR(port->se.opp_table))
-		return PTR_ERR(port->se.opp_table);
+	ret = devm_pm_opp_set_clkname(&pdev->dev, "se");
+	if (ret)
+		return ret;
 	/* OPP table is optional */
-	ret = dev_pm_opp_of_add_table(&pdev->dev);
+	ret = devm_pm_opp_of_add_table(&pdev->dev);
 	if (ret && ret != -ENODEV) {
 		dev_err(&pdev->dev, "invalid OPP table in device tree\n");
-		goto put_clkname;
+		return ret;
 	}
 
 	port->private_data.drv = drv;
@@ -1450,7 +1450,7 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 
 	ret = uart_add_one_port(drv, uport);
 	if (ret)
-		goto err;
+		return ret;
 
 	irq_set_status_flags(uport->irq, IRQ_NOAUTOEN);
 	ret = devm_request_irq(uport->dev, uport->irq, qcom_geni_serial_isr,
@@ -1458,7 +1458,7 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_err(uport->dev, "Failed to get IRQ ret %d\n", ret);
 		uart_remove_one_port(drv, uport);
-		goto err;
+		return ret;
 	}
 
 	/*
@@ -1475,16 +1475,11 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 		if (ret) {
 			device_init_wakeup(&pdev->dev, false);
 			uart_remove_one_port(drv, uport);
-			goto err;
+			return ret;
 		}
 	}
 
 	return 0;
-err:
-	dev_pm_opp_of_remove_table(&pdev->dev);
-put_clkname:
-	dev_pm_opp_put_clkname(port->se.opp_table);
-	return ret;
 }
 
 static int qcom_geni_serial_remove(struct platform_device *pdev)
@@ -1492,8 +1487,6 @@ static int qcom_geni_serial_remove(struct platform_device *pdev)
 	struct qcom_geni_serial_port *port = platform_get_drvdata(pdev);
 	struct uart_driver *drv = port->private_data.drv;
 
-	dev_pm_opp_of_remove_table(&pdev->dev);
-	dev_pm_opp_put_clkname(port->se.opp_table);
 	dev_pm_clear_wake_irq(&pdev->dev);
 	device_init_wakeup(&pdev->dev, false);
 	uart_remove_one_port(drv, &port->uport);