linux-2.6.33/snd_hwdep_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_hwdep_new() へ行く。
• linux-2.6.33/snd_hwdep_new() の差分を削除

*参照元 [#cfec532d]
#backlinks

*説明 [#j58db075]
-パス: [[linux-2.6.33/sound/core/hwdep.c]]

-FIXME: これは何？
--説明


**引数 [#s95ffdcf]
-struct snd_card *card
--
--[[linux-2.6.33/snd_card]]
-char *id
--
-int device
--
-struct snd_hwdep **rhwdep
--
--[[linux-2.6.33/snd_hwdep]]


**返り値 [#dce0ab1c]
-int
--


**参考 [#xe0bd820]


*実装 [#o88bd38f]
 /**
  * snd_hwdep_new - create a new hwdep instance
  * @card: the card instance
  * @id: the id string
  * @device: the device index (zero-based)
  * @rhwdep: the pointer to store the new hwdep instance
  *
  * Creates a new hwdep instance with the given index on the card.
  * The callbacks (hwdep->ops) must be set on the returned instance
  * after this call manually by the caller.
  *
  * Returns zero if successful, or a negative error code on failure.
  */
 int snd_hwdep_new(struct snd_card *card, char *id, int device,
		  struct snd_hwdep **rhwdep)
 {
 	struct snd_hwdep *hwdep;
 	int err;
 	static struct snd_device_ops ops = {
 		.dev_free = snd_hwdep_dev_free,
 		.dev_register = snd_hwdep_dev_register,
 		.dev_disconnect = snd_hwdep_dev_disconnect,
 	};
 
-
--[[linux-2.6.33/snd_device_ops]]
-
--[[linux-2.6.33/snd_hwdep_dev_free()]]
-
--[[linux-2.6.33/snd_hwdep_dev_register()]]
-
--[[linux-2.6.33/snd_hwdep_dev_disconnect()]]

 	if (snd_BUG_ON(!card))
 		return -ENXIO;
 	if (rhwdep)
 		*rhwdep = NULL;
-
--[[linux-2.6.33/snd_BUG_ON()]]

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

 	hwdep->card = card;
 	hwdep->device = device;
 	if (id)
 		strlcpy(hwdep->id, id, sizeof(hwdep->id));
 #ifdef CONFIG_SND_OSSEMUL
-
--[[linux-2.6.33/CONFIG_SND_OSSEMUL]]

 	hwdep->oss_type = -1;
 #endif
 	if ((err = snd_device_new(card, SNDRV_DEV_HWDEP, hwdep, &ops)) < 0) {
 		snd_hwdep_free(hwdep);
 		return err;
 	}
 	init_waitqueue_head(&hwdep->open_wait);
 	mutex_init(&hwdep->open_mutex);
 	if (rhwdep)
 		*rhwdep = hwdep;
-
--[[linux-2.6.33/snd_device_new()]]
-
--[[linux-2.6.33/SNDRV_DEV_HWDEP]]
-
--[[linux-2.6.33/snd_hwdep_free()]]
-
--[[linux-2.6.33/init_waitqueue_head()]]
-
--[[linux-2.6.33/mutex_init()]]

 	return 0;
 }

*コメント [#nfd05242]