ASoC: psc-ac97.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, 14 insertions, 27 deletions

diff --git a/sound/soc/au1x/psc-ac97.c b/sound/soc/au1x/psc-ac97.c
index 87daf456b1c9..476b79a1c11a 100644
--- a/sound/soc/au1x/psc-ac97.c
+++ b/sound/soc/au1x/psc-ac97.c
@@ -368,35 +368,35 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
         unsigned long sel;
         struct au1xpsc_audio_data *wd;
 
-        wd = kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL);
+        wd = devm_kzalloc(&pdev->dev, sizeof(struct au1xpsc_audio_data),
+                          GFP_KERNEL);
         if (!wd)
                 return -ENOMEM;
 
         mutex_init(&wd->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;
 
-        wd->mmio = ioremap(iores->start, resource_size(iores));
+        wd->mmio = devm_ioremap(&pdev->dev, iores->start,
+                                resource_size(iores));
         if (!wd->mmio)
-                goto out1;
+                return -EBUSY;
 
         dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
         if (!dmares)
-                goto out2;
+                return -EBUSY;
         wd->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;
 
         dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
         if (!dmares)
-                goto out2;
+                return -EBUSY;
         wd->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;
 
         /* configuration: max dma trigger threshold, enable ac97 */
@@ -421,24 +421,15 @@ static int __devinit au1xpsc_ac97_drvprobe(struct platform_device *pdev)
 
         ret = snd_soc_register_dai(&pdev->dev, &wd->dai_drv);
         if (ret)
-                goto out2;
+                return ret;
 
         au1xpsc_ac97_workdata = wd;
         return 0;
-
-out2:
-        iounmap(wd->mmio);
-out1:
-        release_mem_region(iores->start, resource_size(iores));
-out0:
-        kfree(wd);
-        return ret;
 }
 
 static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
 {
         struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
-        struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
         snd_soc_unregister_dai(&pdev->dev);
 
@@ -448,10 +439,6 @@ static int __devexit au1xpsc_ac97_drvremove(struct platform_device *pdev)
         au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
         au_sync();
 
-        iounmap(wd->mmio);
-        release_mem_region(r->start, resource_size(r));
-        kfree(wd);
-
         au1xpsc_ac97_workdata = NULL;   /* MDEV */
 
         return 0;