From 1068548d49b5049b41dd351731e9e770b8d7a32b Mon Sep 17 00:00:00 2001
From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Tue, 31 Jul 2012 14:09:00 +0100
Subject: [PATCH] --- yaml --- r: 324563 b: refs/heads/master c:
 390d75c1287bf68c2e29226bf8eb10ae6a08c380 h: refs/heads/master i:   324561:
 f19c64c6548b56d90e28d18bc2d7dac63ac7d334   324559:
 c32e8ebb4fbddfcc5aee36bfc7cecb1f36cb651c v: v3

---
 [refs]                           |  2 +-
 trunk/drivers/iio/adc/at91_adc.c | 42 ++++++--------------------------
 2 files changed, 9 insertions(+), 35 deletions(-)

diff --git a/[refs] b/[refs]
index b98d3184b166..501894291228 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d16f6dbddbd7a2ac40e090da1e6bb7dd9b5a1dcb
+refs/heads/master: 390d75c1287bf68c2e29226bf8eb10ae6a08c380
diff --git a/trunk/drivers/iio/adc/at91_adc.c b/trunk/drivers/iio/adc/at91_adc.c
index f61780a02374..98c96f90c88b 100644
--- a/trunk/drivers/iio/adc/at91_adc.c
+++ b/trunk/drivers/iio/adc/at91_adc.c
@@ -545,13 +545,6 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 		goto error_free_device;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "No resource defined\n");
-		ret = -ENXIO;
-		goto error_ret;
-	}
-
 	platform_set_drvdata(pdev, idev);
 
 	idev->dev.parent = &pdev->dev;
@@ -566,18 +559,12 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 		goto error_free_device;
 	}
 
-	if (!request_mem_region(res->start, resource_size(res),
-				"AT91 adc registers")) {
-		dev_err(&pdev->dev, "Resources are unavailable.\n");
-		ret = -EBUSY;
-		goto error_free_device;
-	}
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
-	st->reg_base = ioremap(res->start, resource_size(res));
+	st->reg_base = devm_request_and_ioremap(&pdev->dev, res);
 	if (!st->reg_base) {
-		dev_err(&pdev->dev, "Failed to map registers.\n");
 		ret = -ENOMEM;
-		goto error_release_mem;
+		goto error_free_device;
 	}
 
 	/*
@@ -592,10 +579,10 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 			  idev);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to allocate IRQ.\n");
-		goto error_unmap_reg;
+		goto error_free_device;
 	}
 
-	st->clk = clk_get(&pdev->dev, "adc_clk");
+	st->clk = devm_clk_get(&pdev->dev, "adc_clk");
 	if (IS_ERR(st->clk)) {
 		dev_err(&pdev->dev, "Failed to get the clock.\n");
 		ret = PTR_ERR(st->clk);
@@ -605,7 +592,7 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 	ret = clk_prepare(st->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not prepare the clock.\n");
-		goto error_free_clk;
+		goto error_free_irq;
 	}
 
 	ret = clk_enable(st->clk);
@@ -614,7 +601,7 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 		goto error_unprepare_clk;
 	}
 
-	st->adc_clk = clk_get(&pdev->dev, "adc_op_clk");
+	st->adc_clk = devm_clk_get(&pdev->dev, "adc_op_clk");
 	if (IS_ERR(st->adc_clk)) {
 		dev_err(&pdev->dev, "Failed to get the ADC clock.\n");
 		ret = PTR_ERR(st->clk);
@@ -624,7 +611,7 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 	ret = clk_prepare(st->adc_clk);
 	if (ret) {
 		dev_err(&pdev->dev, "Could not prepare the ADC clock.\n");
-		goto error_free_adc_clk;
+		goto error_disable_clk;
 	}
 
 	ret = clk_enable(st->adc_clk);
@@ -697,20 +684,12 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 	clk_disable(st->adc_clk);
 error_unprepare_adc_clk:
 	clk_unprepare(st->adc_clk);
-error_free_adc_clk:
-	clk_put(st->adc_clk);
 error_disable_clk:
 	clk_disable(st->clk);
 error_unprepare_clk:
 	clk_unprepare(st->clk);
-error_free_clk:
-	clk_put(st->clk);
 error_free_irq:
 	free_irq(st->irq, idev);
-error_unmap_reg:
-	iounmap(st->reg_base);
-error_release_mem:
-	release_mem_region(res->start, resource_size(res));
 error_free_device:
 	iio_device_free(idev);
 error_ret:
@@ -720,20 +699,15 @@ static int __devinit at91_adc_probe(struct platform_device *pdev)
 static int __devexit at91_adc_remove(struct platform_device *pdev)
 {
 	struct iio_dev *idev = platform_get_drvdata(pdev);
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	struct at91_adc_state *st = iio_priv(idev);
 
 	iio_device_unregister(idev);
 	at91_adc_trigger_remove(idev);
 	at91_adc_buffer_remove(idev);
 	clk_disable_unprepare(st->adc_clk);
-	clk_put(st->adc_clk);
 	clk_disable(st->clk);
 	clk_unprepare(st->clk);
-	clk_put(st->clk);
 	free_irq(st->irq, idev);
-	iounmap(st->reg_base);
-	release_mem_region(res->start, resource_size(res));
 	iio_device_free(idev);
 
 	return 0;