[PATCH 1/2] ALSA: core: add snd_device_init

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From: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>

Begin allowing refactored modules to allocate their own device but use a
common initialization procedure for their devices.

Signed-off-by: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>
---
 include/sound/core.h |  1 +
 sound/core/init.c    | 19 ++++++++++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/include/sound/core.h b/include/sound/core.h
index dfef0c9d4b9f7..a4744e142c7e3 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -240,6 +240,7 @@ extern struct dentry *sound_debugfs_root;
 void snd_request_card(int card);
 
 int snd_device_alloc(struct device **dev_p, struct snd_card *card);
+void snd_device_init(struct device *dev, struct snd_card *card);
 
 int snd_register_device(int type, struct snd_card *card, int dev,
 			const struct file_operations *f_ops,
diff --git a/sound/core/init.c b/sound/core/init.c
index d61bde1225f23..37a8e4791f781 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -132,15 +132,28 @@ int snd_device_alloc(struct device **dev_p, struct snd_card *card)
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
+	snd_device_init(dev, card);
+	*dev_p = dev;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_device_alloc);
+
+/**
+ * snd_device_init - Initialize struct device for sound devices
+ * @dev_p: pointer to store the allocated device
+ * @card: card to assign, optional
+ *
+ * For releasing the allocated device, call put_device().
+ */
+void snd_device_init(struct device *dev, struct snd_card *card)
+{
 	device_initialize(dev);
 	if (card)
 		dev->parent = &card->card_dev;
 	dev->class = &sound_class;
 	dev->release = default_release_alloc;
-	*dev_p = dev;
-	return 0;
 }
-EXPORT_SYMBOL_GPL(snd_device_alloc);
+EXPORT_SYMBOL_GPL(snd_device_init);
 
 static int snd_card_init(struct snd_card *card, struct device *parent,
 			 int idx, const char *xid, struct module *module,
-- 
2.42.0.rc1.204.g551eb34607-goog




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