[PATCH usb-next] usb: dwc3: Use devm_of_platform_populate

[Jisheng Zhang]

Use managed API devm_of_platform_populate() to simplify error and exit
code path.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang at synaptics.com>
---
 drivers/usb/dwc3/dwc3-exynos.c     | 2 +-
 drivers/usb/dwc3/dwc3-keystone.c   | 2 +-
 drivers/usb/dwc3/dwc3-meson-g12a.c | 5 +----
 drivers/usb/dwc3/dwc3-of-simple.c  | 4 +---
 drivers/usb/dwc3/dwc3-omap.c       | 3 +--
 drivers/usb/dwc3/dwc3-qcom.c       | 8 ++------
 drivers/usb/dwc3/dwc3-st.c         | 4 +---
 7 files changed, 8 insertions(+), 20 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 90bb022737da..f567d1e63c05 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -110,7 +110,7 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
 	}
 
 	if (node) {
-		ret = of_platform_populate(node, NULL, NULL, dev);
+		ret = devm_of_platform_populate(dev);
 		if (ret) {
 			dev_err(dev, "failed to add dwc3 core\n");
 			goto populate_err;
diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
index 9a99253d5ba3..626b16c46688 100644
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -157,7 +157,7 @@ static int kdwc3_probe(struct platform_device *pdev)
 	kdwc3_enable_irqs(kdwc);
 
 skip_irq:
-	error = of_platform_populate(node, NULL, NULL, dev);
+	error = devm_of_platform_populate(dev);
 	if (error) {
 		dev_err(&pdev->dev, "failed to create dwc3 core\n");
 		goto err_core;
diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c
index 417e05381b5d..83015bb7b926 100644
--- a/drivers/usb/dwc3/dwc3-meson-g12a.c
+++ b/drivers/usb/dwc3/dwc3-meson-g12a.c
@@ -702,7 +702,6 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 {
 	struct dwc3_meson_g12a	*priv;
 	struct device		*dev = &pdev->dev;
-	struct device_node	*np = dev->of_node;
 	void __iomem *base;
 	int ret, i;
 
@@ -794,7 +793,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 			goto err_phys_power;
 	}
 
-	ret = of_platform_populate(np, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret)
 		goto err_phys_power;
 
@@ -832,8 +831,6 @@ static int dwc3_meson_g12a_remove(struct platform_device *pdev)
 	if (priv->drvdata->otg_switch_supported)
 		usb_role_switch_unregister(priv->role_switch);
 
-	of_platform_depopulate(dev);
-
 	for (i = 0 ; i < PHY_COUNT ; ++i) {
 		phy_power_off(priv->phys[i]);
 		phy_exit(priv->phys[i]);
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index e62ecd22b3ed..f1c267e39d62 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -73,7 +73,7 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_resetc_assert;
 
-	ret = of_platform_populate(np, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret)
 		goto err_clk_put;
 
@@ -97,8 +97,6 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
 
 static void __dwc3_of_simple_teardown(struct dwc3_of_simple *simple)
 {
-	of_platform_depopulate(simple->dev);
-
 	clk_bulk_disable_unprepare(simple->num_clocks, simple->clks);
 	clk_bulk_put_all(simple->num_clocks, simple->clks);
 	simple->num_clocks = 0;
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 3db17806e92e..46e7a1dd7c50 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -505,7 +505,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto err1;
 
-	ret = of_platform_populate(node, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to create dwc3 core\n");
 		goto err1;
@@ -535,7 +535,6 @@ static int dwc3_omap_remove(struct platform_device *pdev)
 
 	dwc3_omap_disable_irqs(omap);
 	disable_irq(omap->irq);
-	of_platform_depopulate(omap->dev);
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index c703d552bbcf..8f5714c3d379 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -636,7 +636,7 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	ret = of_platform_populate(np, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret) {
 		dev_err(dev, "failed to register dwc3 core - %d\n", ret);
 		return ret;
@@ -775,9 +775,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
 interconnect_exit:
 	dwc3_qcom_interconnect_exit(qcom);
 depopulate:
-	if (np)
-		of_platform_depopulate(&pdev->dev);
-	else
+	if (!np)
 		platform_device_put(pdev);
 clk_disable:
 	for (i = qcom->num_clocks - 1; i >= 0; i--) {
@@ -796,8 +794,6 @@ static int dwc3_qcom_remove(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	int i;
 
-	of_platform_depopulate(dev);
-
 	for (i = qcom->num_clocks - 1; i >= 0; i--) {
 		clk_disable_unprepare(qcom->clks[i]);
 		clk_put(qcom->clks[i]);
diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
index e733be840545..9ec2ecf8d81f 100644
--- a/drivers/usb/dwc3/dwc3-st.c
+++ b/drivers/usb/dwc3/dwc3-st.c
@@ -259,7 +259,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	}
 
 	/* Allocate and initialize the core */
-	ret = of_platform_populate(node, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret) {
 		dev_err(dev, "failed to add dwc3 core\n");
 		goto err_node_put;
@@ -309,8 +309,6 @@ static int st_dwc3_remove(struct platform_device *pdev)
 {
 	struct st_dwc3 *dwc3_data = platform_get_drvdata(pdev);
 
-	of_platform_depopulate(&pdev->dev);
-
 	reset_control_assert(dwc3_data->rstc_pwrdn);
 	reset_control_assert(dwc3_data->rstc_rst);
 
-- 
2.29.2