[PATCH 2/5] iio: adc: exynos: Simplify with dev_err_probe

[Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>]

Use dev_err_probe() to make error code handling simpler and handle
deferred probe nicely (avoid spamming logs).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
---
 drivers/iio/adc/exynos_adc.c | 29 ++++++++++-------------------
 1 file changed, 10 insertions(+), 19 deletions(-)

diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 1484adff00df..491e8dcfd91e 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -564,10 +564,8 @@ static int exynos_adc_probe(struct platform_device *pdev)
 	info = iio_priv(indio_dev);
 
 	info->data = exynos_adc_get_data(pdev);
-	if (!info->data) {
-		dev_err(&pdev->dev, "failed getting exynos_adc_data\n");
-		return -EINVAL;
-	}
+	if (!info->data)
+		return dev_err_probe(&pdev->dev, -EINVAL, "failed getting exynos_adc_data\n");
 
 	info->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(info->regs))
@@ -578,10 +576,9 @@ static int exynos_adc_probe(struct platform_device *pdev)
 		info->pmu_map = syscon_regmap_lookup_by_phandle(
 					pdev->dev.of_node,
 					"samsung,syscon-phandle");
-		if (IS_ERR(info->pmu_map)) {
-			dev_err(&pdev->dev, "syscon regmap lookup failed.\n");
-			return PTR_ERR(info->pmu_map);
-		}
+		if (IS_ERR(info->pmu_map))
+			return dev_err_probe(&pdev->dev, PTR_ERR(info->pmu_map),
+					     "syscon regmap lookup failed.\n");
 	}
 
 	irq = platform_get_irq(pdev, 0);
@@ -593,20 +590,14 @@ static int exynos_adc_probe(struct platform_device *pdev)
 	init_completion(&info->completion);
 
 	info->clk = devm_clk_get(&pdev->dev, "adc");
-	if (IS_ERR(info->clk)) {
-		dev_err(&pdev->dev, "failed getting clock, err = %ld\n",
-							PTR_ERR(info->clk));
-		return PTR_ERR(info->clk);
-	}
+	if (IS_ERR(info->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->clk), "failed getting clock\n");
 
 	if (info->data->needs_sclk) {
 		info->sclk = devm_clk_get(&pdev->dev, "sclk");
-		if (IS_ERR(info->sclk)) {
-			dev_err(&pdev->dev,
-				"failed getting sclk clock, err = %ld\n",
-				PTR_ERR(info->sclk));
-			return PTR_ERR(info->sclk);
-		}
+		if (IS_ERR(info->sclk))
+			return dev_err_probe(&pdev->dev, PTR_ERR(info->sclk),
+					     "failed getting sclk clock\n");
 	}
 
 	info->vdd = devm_regulator_get(&pdev->dev, "vdd");

-- 
2.51.0