linux-2.6.33/snd_device_new() の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• linux-2.6.33/snd_device_new() へ行く。
• linux-2.6.33/snd_device_new() の差分を削除

*参照元 [#w7f7a722]
#backlinks

*説明 [#x69ac784]
-パス: [[linux-2.6.33/sound/core/device.c]]

-FIXME: これは何？
--説明


**引数 [#p3be01f2]
-struct snd_card *card
--
--[[linux-2.6.33/snd_card]]
-snd_device_type_t type
--
--[[linux-2.6.33/snd_device_type_t]]
-void *device_data
--
-struct snd_device_ops *ops
--
--[[linux-2.6.33/snd_device_ops]]


**返り値 [#fc0958b2]
-int
--


**参考 [#f3aaa1a1]


*実装 [#rca3de12]
 /**
  * snd_device_new - create an ALSA device component
  * @card: the card instance
  * @type: the device type, SNDRV_DEV_XXX
  * @device_data: the data pointer of this device
  * @ops: the operator table
  *
  * Creates a new device component for the given data pointer.
  * The device will be assigned to the card and managed together
  * by the card.
  *
  * The data pointer plays a role as the identifier, too, so the
  * pointer address must be unique and unchanged.
  *
  * Returns zero if successful, or a negative error code on failure.
  */
 int snd_device_new(struct snd_card *card, snd_device_type_t type,
 		   void *device_data, struct snd_device_ops *ops)
 {
 	struct snd_device *dev;
 
-
--[[linux-2.6.33/snd_device]]

 	if (snd_BUG_ON(!card || !device_data || !ops))
 		return -ENXIO;
-
--[[linux-2.6.33/snd_BUG_ON()]]

 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL) {
 		snd_printk(KERN_ERR "Cannot allocate device\n");
 		return -ENOMEM;
 	}
-
--[[linux-2.6.33/kzalloc()]]
-
--[[linux-2.6.33/snd_printk()]]

 	dev->card = card;
 	dev->type = type;
 	dev->state = SNDRV_DEV_BUILD;
 	dev->device_data = device_data;
 	dev->ops = ops;
 	list_add(&dev->list, &card->devices);	/* add to the head of list */
-
--[[linux-2.6.33/SNDRV_DEV_BUILD]]
-
--[[linux-2.6.33/list_add()]]

 	return 0;
 }
 
 EXPORT_SYMBOL(snd_device_new);
-ライセンスに関係なくシンボルを公開する。
--[[linux-2.6.33/EXPORT_SYMBOL()]]


*コメント [#x8f403f1]