ASoC: kirkwood-i2s: use devm_* APIs

Simplify the cleanup paths in the driver by using the devm_* APIs,
ensuring that all error paths are correctly checked.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 15 insertions, 38 deletions

diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
index 1d5db484d2df..f059f401bdad 100644
--- a/sound/soc/kirkwood/kirkwood-i2s.c
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -406,57 +406,47 @@ static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev)
         struct kirkwood_dma_data *priv;
         int err;
 
-        priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL);
+        priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
         if (!priv) {
                 dev_err(&pdev->dev, "allocation failed\n");
-                err = -ENOMEM;
-                goto error;
+                return -ENOMEM;
         }
         dev_set_drvdata(&pdev->dev, priv);
 
         mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!mem) {
                 dev_err(&pdev->dev, "platform_get_resource failed\n");
-                err = -ENXIO;
-                goto err_alloc;
+                return -ENXIO;
         }
 
-        priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME);
-        if (!priv->mem) {
-                dev_err(&pdev->dev, "request_mem_region failed\n");
-                err = -EBUSY;
-                goto err_alloc;
-        }
-
-        priv->io = ioremap(priv->mem->start, SZ_16K);
+        priv->io = devm_request_and_ioremap(&pdev->dev, mem);
         if (!priv->io) {
-                dev_err(&pdev->dev, "ioremap failed\n");
-                err = -ENOMEM;
-                goto err_iomem;
+                dev_err(&pdev->dev, "devm_request_and_ioremap failed\n");
+                return -ENOMEM;
         }
 
         priv->irq = platform_get_irq(pdev, 0);
         if (priv->irq <= 0) {
                 dev_err(&pdev->dev, "platform_get_irq failed\n");
-                err = -ENXIO;
-                goto err_ioremap;
+                return -ENXIO;
         }
 
         if (!data) {
                 dev_err(&pdev->dev, "no platform data ?!\n");
-                err = -EINVAL;
-                goto err_ioremap;
+                return -EINVAL;
         }
 
         priv->burst = data->burst;
 
-        priv->clk = clk_get(&pdev->dev, NULL);
+        priv->clk = devm_clk_get(&pdev->dev, NULL);
         if (IS_ERR(priv->clk)) {
                 dev_err(&pdev->dev, "no clock\n");
-                err = PTR_ERR(priv->clk);
-                goto err_ioremap;
+                return PTR_ERR(priv->clk);
         }
-        clk_prepare_enable(priv->clk);
+
+        err = clk_prepare_enable(priv->clk);
+        if (err < 0)
+                return err;
 
         err = snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai);
         if (!err)
@@ -464,15 +454,7 @@ static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev)
         dev_err(&pdev->dev, "snd_soc_register_dai failed\n");
 
         clk_disable_unprepare(priv->clk);
-        clk_put(priv->clk);
-
-err_ioremap:
-        iounmap(priv->io);
-err_iomem:
-        release_mem_region(priv->mem->start, SZ_16K);
-err_alloc:
-        kfree(priv);
-error:
+
         return err;
 }
 
@@ -483,11 +465,6 @@ static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev)
         snd_soc_unregister_dai(&pdev->dev);
 
         clk_disable_unprepare(priv->clk);
-        clk_put(priv->clk);
-
-        iounmap(priv->io);
-        release_mem_region(priv->mem->start, SZ_16K);
-        kfree(priv);
 
         return 0;
 }