Merge branch 'topic/devm' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-omap

2 files changed, 36 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 0b83168d8ff4..34c34d6e095c 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -377,6 +377,8 @@ int snd_soc_resume(struct device *dev);
 int snd_soc_poweroff(struct device *dev);
 int snd_soc_register_platform(struct device *dev,
                 const struct snd_soc_platform_driver *platform_drv);
+int devm_snd_soc_register_platform(struct device *dev,
+                const struct snd_soc_platform_driver *platform_drv);
 void snd_soc_unregister_platform(struct device *dev);
 int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
                 const struct snd_soc_platform_driver *platform_drv);
diff --git a/sound/soc/soc-devres.c b/sound/soc/soc-devres.c
index 7ac745df1412..e94aa0277250 100644
--- a/sound/soc/soc-devres.c
+++ b/sound/soc/soc-devres.c
@@ -52,6 +52,40 @@ int devm_snd_soc_register_component(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
 
+static void devm_platform_release(struct device *dev, void *res)
+{
+        snd_soc_unregister_platform(*(struct device **)res);
+}
+
+/**
+ * devm_snd_soc_register_platform - resource managed platform registration
+ * @dev: Device used to manage platform
+ * @platform: platform to register
+ *
+ * Register a platform driver with automatic unregistration when the device is
+ * unregistered.
+ */
+int devm_snd_soc_register_platform(struct device *dev,
+                        const struct snd_soc_platform_driver *platform_drv)
+{
+        struct device **ptr;
+        int ret;
+
+        ptr = devres_alloc(devm_platform_release, sizeof(*ptr), GFP_KERNEL);
+        if (!ptr)
+                return -ENOMEM;
+
+        ret = snd_soc_register_platform(dev, platform_drv);
+        if (ret == 0) {
+                *ptr = dev;
+                devres_add(dev, ptr);
+        } else {
+                devres_free(ptr);
+        }
+
+        return ret;
+}
+
 static void devm_card_release(struct device *dev, void *res)
 {
         snd_soc_unregister_card(*(struct snd_soc_card **)res);