From: Sachin Kamat <sachin.kamat@linaro.org>
Date: Fri, 7 Sep 2012 00:17:56 +0000 (+1000)
Subject: drivers/thermal/exynos_thermal.c: use devm_* functions
X-Git-Tag: next-20120910~2^2~204
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2145c31679e93cee677a72b9c0fd9b40c7743793;p=karo-tx-linux.git

drivers/thermal/exynos_thermal.c: use devm_* functions

devm_* functions are used to replace kzalloc, request_mem_region, ioremap
and request_irq functions in probe call.  With the usage of devm_*
functions explicit freeing and unmapping is not required.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Len Brown <lenb@kernel.org>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c
index 3a7a068ef610..86e4e9f17aba 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -780,7 +780,9 @@ static int __devinit exynos_tmu_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "No platform init data supplied.\n");
 		return -ENODEV;
 	}
-	data = kzalloc(sizeof(struct exynos_tmu_data), GFP_KERNEL);
+
+	data = devm_kzalloc(&pdev->dev, sizeof(struct exynos_tmu_data),
+								GFP_KERNEL);
 	if (!data) {
 		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
 		return -ENOMEM;
@@ -788,47 +790,29 @@ static int __devinit exynos_tmu_probe(struct platform_device *pdev)
 
 	data->irq = platform_get_irq(pdev, 0);
 	if (data->irq < 0) {
-		ret = data->irq;
 		dev_err(&pdev->dev, "Failed to get platform irq\n");
-		goto err_free;
+		return data->irq;
 	}
 
 	INIT_WORK(&data->irq_work, exynos_tmu_work);
 
 	data->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!data->mem) {
-		ret = -ENOENT;
-		dev_err(&pdev->dev, "Failed to get platform resource\n");
-		goto err_free;
-	}
 
-	data->mem = request_mem_region(data->mem->start,
-			resource_size(data->mem), pdev->name);
-	if (!data->mem) {
-		ret = -ENODEV;
-		dev_err(&pdev->dev, "Failed to request memory region\n");
-		goto err_free;
-	}
-
-	data->base = ioremap(data->mem->start, resource_size(data->mem));
-	if (!data->base) {
-		ret = -ENODEV;
-		dev_err(&pdev->dev, "Failed to ioremap memory\n");
-		goto err_mem_region;
-	}
+	data->base = devm_request_and_ioremap(&pdev->dev, data->mem);
+	if (!data->base)
+		return -ENODEV;
 
-	ret = request_irq(data->irq, exynos_tmu_irq,
+	ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq,
 		IRQF_TRIGGER_RISING, "exynos-tmu", data);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq);
-		goto err_io_remap;
+		return ret;
 	}
 
 	data->clk = clk_get(NULL, "tmu_apbif");
 	if (IS_ERR(data->clk)) {
-		ret = PTR_ERR(data->clk);
 		dev_err(&pdev->dev, "Failed to get clock\n");
-		goto err_irq;
+		return PTR_ERR(data->clk);
 	}
 
 	if (pdata->type == SOC_ARCH_EXYNOS5 ||
@@ -880,14 +864,6 @@ static int __devinit exynos_tmu_probe(struct platform_device *pdev)
 err_clk:
 	platform_set_drvdata(pdev, NULL);
 	clk_put(data->clk);
-err_irq:
-	free_irq(data->irq, data);
-err_io_remap:
-	iounmap(data->base);
-err_mem_region:
-	release_mem_region(data->mem->start, resource_size(data->mem));
-err_free:
-	kfree(data);
 
 	return ret;
 }
@@ -902,15 +878,8 @@ static int __devexit exynos_tmu_remove(struct platform_device *pdev)
 
 	clk_put(data->clk);
 
-	free_irq(data->irq, data);
-
-	iounmap(data->base);
-	release_mem_region(data->mem->start, resource_size(data->mem));
-
 	platform_set_drvdata(pdev, NULL);
 
-	kfree(data);
-
 	return 0;
 }