[PATCH v2 5/6] usb: dwc3: exynos: Use devm_regulator_bulk_get_enable() helper function

[Anand Moon <linux.amoon@gmail.com>]

Use devm_regulator_bulk_get_enable() instead of open coded
'devm_regulator_get(), regulator_enable(), regulator_disable().

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
V2: no changes, did not find any regression in pm suspend/resume.
---
 drivers/usb/dwc3/dwc3-exynos.c | 50 ++++------------------------------
 1 file changed, 5 insertions(+), 45 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 5d365ca51771..2d341f0e22a3 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -32,9 +32,6 @@ struct dwc3_exynos {
 	struct clk		*clks[DWC3_EXYNOS_MAX_CLOCKS];
 	int			num_clks;
 	int			suspend_clk_idx;
-
-	struct regulator	*vdd33;
-	struct regulator	*vdd10;
 };
 
 static int dwc3_exynos_probe(struct platform_device *pdev)
@@ -44,6 +41,7 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
 	struct device_node	*node = dev->of_node;
 	const struct dwc3_exynos_driverdata *driver_data;
 	int			i, ret;
+	static const char * const regulators[] = { "vdd33", "vdd10" };
 
 	exynos = devm_kzalloc(dev, sizeof(*exynos), GFP_KERNEL);
 	if (!exynos)
@@ -78,27 +76,10 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
 	if (exynos->suspend_clk_idx >= 0)
 		clk_prepare_enable(exynos->clks[exynos->suspend_clk_idx]);
 
-	exynos->vdd33 = devm_regulator_get(dev, "vdd33");
-	if (IS_ERR(exynos->vdd33)) {
-		ret = PTR_ERR(exynos->vdd33);
-		goto vdd33_err;
-	}
-	ret = regulator_enable(exynos->vdd33);
-	if (ret) {
-		dev_err(dev, "Failed to enable VDD33 supply\n");
-		goto vdd33_err;
-	}
-
-	exynos->vdd10 = devm_regulator_get(dev, "vdd10");
-	if (IS_ERR(exynos->vdd10)) {
-		ret = PTR_ERR(exynos->vdd10);
-		goto vdd10_err;
-	}
-	ret = regulator_enable(exynos->vdd10);
-	if (ret) {
-		dev_err(dev, "Failed to enable VDD10 supply\n");
-		goto vdd10_err;
-	}
+	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulators),
+					     regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable regulators\n");
 
 	if (node) {
 		ret = of_platform_populate(node, NULL, NULL, dev);
@@ -115,10 +96,6 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
 	return 0;
 
 populate_err:
-	regulator_disable(exynos->vdd10);
-vdd10_err:
-	regulator_disable(exynos->vdd33);
-vdd33_err:
 	for (i = exynos->num_clks - 1; i >= 0; i--)
 		clk_disable_unprepare(exynos->clks[i]);
 
@@ -140,9 +117,6 @@ static void dwc3_exynos_remove(struct platform_device *pdev)
 
 	if (exynos->suspend_clk_idx >= 0)
 		clk_disable_unprepare(exynos->clks[exynos->suspend_clk_idx]);
-
-	regulator_disable(exynos->vdd33);
-	regulator_disable(exynos->vdd10);
 }
 
 static const struct dwc3_exynos_driverdata exynos5250_drvdata = {
@@ -196,9 +170,6 @@ static int dwc3_exynos_suspend(struct device *dev)
 	for (i = exynos->num_clks - 1; i >= 0; i--)
 		clk_disable_unprepare(exynos->clks[i]);
 
-	regulator_disable(exynos->vdd33);
-	regulator_disable(exynos->vdd10);
-
 	return 0;
 }
 
@@ -207,17 +178,6 @@ static int dwc3_exynos_resume(struct device *dev)
 	struct dwc3_exynos *exynos = dev_get_drvdata(dev);
 	int i, ret;
 
-	ret = regulator_enable(exynos->vdd33);
-	if (ret) {
-		dev_err(dev, "Failed to enable VDD33 supply\n");
-		return ret;
-	}
-	ret = regulator_enable(exynos->vdd10);
-	if (ret) {
-		dev_err(dev, "Failed to enable VDD10 supply\n");
-		return ret;
-	}
-
 	for (i = 0; i < exynos->num_clks; i++) {
 		ret = clk_prepare_enable(exynos->clks[i]);
 		if (ret) {
-- 
2.44.0