ASoC: ac97c.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, 13 insertions, 27 deletions

diff --git a/sound/soc/au1x/ac97c.c b/sound/soc/au1x/ac97c.c
index 7771934b93e2..c5ac2449563a 100644
--- a/sound/soc/au1x/ac97c.c
+++ b/sound/soc/au1x/ac97c.c
@@ -229,35 +229,34 @@ static int __devinit au1xac97c_drvprobe(struct platform_device *pdev)
         struct resource *iores, *dmares;
         struct au1xpsc_audio_data *ctx;
 
-        ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+        ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
         if (!ctx)
                 return -ENOMEM;
 
         mutex_init(&ctx->lock);
 
         iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!iores) {
-                ret = -ENODEV;
-                goto out0;
-        }
+        if (!iores)
+                return -ENODEV;
 
-        ret = -EBUSY;
-        if (!request_mem_region(iores->start, resource_size(iores),
-                                pdev->name))
-                goto out0;
+        if (!devm_request_mem_region(&pdev->dev, iores->start,
+                                     resource_size(iores),
+                                     pdev->name))
+                return -EBUSY;
 
-        ctx->mmio = ioremap_nocache(iores->start, resource_size(iores));
+        ctx->mmio = devm_ioremap_nocache(&pdev->dev, iores->start,
+                                         resource_size(iores));
         if (!ctx->mmio)
-                goto out1;
+                return -EBUSY;
 
         dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
         if (!dmares)
-                goto out2;
+                return -EBUSY;
         ctx->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;
 
         dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
         if (!dmares)
-                goto out2;
+                return -EBUSY;
         ctx->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;
 
         /* switch it on */
@@ -271,33 +270,20 @@ static int __devinit au1xac97c_drvprobe(struct platform_device *pdev)
 
         ret = snd_soc_register_dai(&pdev->dev, &au1xac97c_dai_driver);
         if (ret)
-                goto out2;
+                return ret;
 
         ac97c_workdata = ctx;
         return 0;
-
-out2:
-        iounmap(ctx->mmio);
-out1:
-        release_mem_region(iores->start, resource_size(iores));
-out0:
-        kfree(ctx);
-        return ret;
 }
 
 static int __devexit au1xac97c_drvremove(struct platform_device *pdev)
 {
         struct au1xpsc_audio_data *ctx = platform_get_drvdata(pdev);
-        struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
         snd_soc_unregister_dai(&pdev->dev);
 
         WR(ctx, AC97_ENABLE, EN_D);     /* clock off, disable */
 
-        iounmap(ctx->mmio);
-        release_mem_region(r->start, resource_size(r));
-        kfree(ctx);
-
         ac97c_workdata = NULL;  /* MDEV */
 
         return 0;