ASoC: ep93xx-ac97: use devm_* helpers to cleanup probe

Use the devm_* helpers to cleanup the probe routine. This also eliminates
having to carry the mem and irq values in the private data for the remove.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 26 insertions, 48 deletions

diff --git a/sound/soc/ep93xx/ep93xx-ac97.c b/sound/soc/ep93xx/ep93xx-ac97.c
index 0678637abd66..bdffab33e160 100644
--- a/sound/soc/ep93xx/ep93xx-ac97.c
+++ b/sound/soc/ep93xx/ep93xx-ac97.c
@@ -87,17 +87,13 @@
  * struct ep93xx_ac97_info - EP93xx AC97 controller info structure
  * @lock: mutex serializing access to the bus (slot 1 & 2 ops)
  * @dev: pointer to the platform device dev structure
- * @mem: physical memory resource for the registers
  * @regs: mapped AC97 controller registers
- * @irq: AC97 interrupt number
  * @done: bus ops wait here for an interrupt
  */
 struct ep93xx_ac97_info {
         struct mutex            lock;
         struct device           *dev;
-        struct resource         *mem;
         void __iomem            *regs;
-        int                     irq;
         struct completion       done;
 };
 
@@ -359,66 +355,50 @@ static struct snd_soc_dai_driver ep93xx_ac97_dai = {
 static int __devinit ep93xx_ac97_probe(struct platform_device *pdev)
 {
         struct ep93xx_ac97_info *info;
+        struct resource *res;
+        unsigned int irq;
         int ret;
 
-        info = kzalloc(sizeof(struct ep93xx_ac97_info), GFP_KERNEL);
+        info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
         if (!info)
                 return -ENOMEM;
 
-        dev_set_drvdata(&pdev->dev, info);
-
-        mutex_init(&info->lock);
-        init_completion(&info->done);
-        info->dev = &pdev->dev;
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENODEV;
 
-        info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!info->mem) {
-                ret = -ENXIO;
-                goto fail_free_info;
-        }
+        info->regs = devm_request_and_ioremap(&pdev->dev, res);
+        if (!info->regs)
+                return -ENXIO;
 
-        info->irq = platform_get_irq(pdev, 0);
-        if (!info->irq) {
-                ret = -ENXIO;
-                goto fail_free_info;
-        }
+        irq = platform_get_irq(pdev, 0);
+        if (!irq)
+                return -ENODEV;
 
-        if (!request_mem_region(info->mem->start, resource_size(info->mem),
-                                pdev->name)) {
-                ret = -EBUSY;
-                goto fail_free_info;
-        }
+        ret = devm_request_irq(&pdev->dev, irq, ep93xx_ac97_interrupt,
+                               IRQF_TRIGGER_HIGH, pdev->name, info);
+        if (ret)
+                goto fail;
 
-        info->regs = ioremap(info->mem->start, resource_size(info->mem));
-        if (!info->regs) {
-                ret = -ENOMEM;
-                goto fail_release_mem;
-        }
+        dev_set_drvdata(&pdev->dev, info);
 
-        ret = request_irq(info->irq, ep93xx_ac97_interrupt, IRQF_TRIGGER_HIGH,
-                          pdev->name, info);
-        if (ret)
-                goto fail_unmap_mem;
+        mutex_init(&info->lock);
+        init_completion(&info->done);
+        info->dev = &pdev->dev;
 
         ep93xx_ac97_info = info;
         platform_set_drvdata(pdev, info);
 
         ret = snd_soc_register_dai(&pdev->dev, &ep93xx_ac97_dai);
         if (ret)
-                goto fail_free_irq;
+                goto fail;
 
         return 0;
 
-fail_free_irq:
+fail:
         platform_set_drvdata(pdev, NULL);
-        free_irq(info->irq, info);
-fail_unmap_mem:
-        iounmap(info->regs);
-fail_release_mem:
-        release_mem_region(info->mem->start, resource_size(info->mem));
-fail_free_info:
-        kfree(info);
-
+        ep93xx_ac97_info = NULL;
+        dev_set_drvdata(&pdev->dev, NULL);
         return ret;
 }
 
@@ -431,11 +411,9 @@ static int __devexit ep93xx_ac97_remove(struct platform_device *pdev)
         /* disable the AC97 controller */
         ep93xx_ac97_write_reg(info, AC97GCR, 0);
 
-        free_irq(info->irq, info);
-        iounmap(info->regs);
-        release_mem_region(info->mem->start, resource_size(info->mem));
         platform_set_drvdata(pdev, NULL);
-        kfree(info);
+        ep93xx_ac97_info = NULL;
+        dev_set_drvdata(&pdev->dev, NULL);
 
         return 0;
 }