ASoC: dma.c: use devm_ functions

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses devm_kzalloc, devm_request_mem_region and
devm_ioremap for data that is allocated in the probe function of a platform
device and is only freed in the remove function.

Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 2 insertions, 10 deletions

diff --git a/sound/soc/au1x/dma.c b/sound/soc/au1x/dma.c
index c4017bd56ab8..0a91b186a86f 100644
--- a/sound/soc/au1x/dma.c
+++ b/sound/soc/au1x/dma.c
@@ -325,27 +325,19 @@ static struct snd_soc_platform_driver alchemy_pcm_soc_platform = {
 static int __devinit alchemy_pcm_drvprobe(struct platform_device *pdev)
 {
         struct alchemy_pcm_ctx *ctx;
-        int ret;
 
-        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+        ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
         if (!ctx)
                 return -ENOMEM;
 
         platform_set_drvdata(pdev, ctx);
 
-        ret = snd_soc_register_platform(&pdev->dev, &alchemy_pcm_soc_platform);
-        if (ret)
-                kfree(ctx);
-
-        return ret;
+        return snd_soc_register_platform(&pdev->dev, &alchemy_pcm_soc_platform);
 }
 
 static int __devexit alchemy_pcm_drvremove(struct platform_device *pdev)
 {
-        struct alchemy_pcm_ctx *ctx = platform_get_drvdata(pdev);
-
         snd_soc_unregister_platform(&pdev->dev);
-        kfree(ctx);
 
         return 0;
 }