diff options
| -rw-r--r-- | include/sound/core.h | 37 | ||||
| -rw-r--r-- | sound/core/sound.c | 15 |
2 files changed, 42 insertions, 10 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 521f036cce9..83a575a29d0 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -211,9 +211,40 @@ extern struct class *sound_class; void snd_request_card(int card); -int snd_register_device(int type, struct snd_card *card, int dev, - const struct file_operations *f_ops, void *private_data, - const char *name); +int snd_register_device_for_dev(int type, struct snd_card *card, + int dev, + const struct file_operations *f_ops, + void *private_data, + const char *name, + struct device *device); + +/** + * snd_register_device - Register the ALSA device file for the card + * @type: the device type, SNDRV_DEVICE_TYPE_XXX + * @card: the card instance + * @dev: the device index + * @f_ops: the file operations + * @private_data: user pointer for f_ops->open() + * @name: the device file name + * + * Registers an ALSA device file for the given card. + * The operators have to be set in reg parameter. + * + * This function uses the card's device pointer to link to the + * correct &struct device. + * + * Returns zero if successful, or a negative error code on failure. + */ +static inline int snd_register_device(int type, struct snd_card *card, int dev, + const struct file_operations *f_ops, + void *private_data, + const char *name) +{ + return snd_register_device_for_dev(type, card, dev, f_ops, + private_data, name, + card ? card->dev : NULL); +} + int snd_unregister_device(int type, struct snd_card *card, int dev); void *snd_lookup_minor_data(unsigned int minor, int type); int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev, diff --git a/sound/core/sound.c b/sound/core/sound.c index 82a61c67cf3..4084de06412 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -219,26 +219,27 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev) #endif /** - * snd_register_device - Register the ALSA device file for the card + * snd_register_device_for_dev - Register the ALSA device file for the card * @type: the device type, SNDRV_DEVICE_TYPE_XXX * @card: the card instance * @dev: the device index * @f_ops: the file operations * @private_data: user pointer for f_ops->open() * @name: the device file name + * @device: the &struct device to link this new device to * * Registers an ALSA device file for the given card. * The operators have to be set in reg parameter. * - * Retrurns zero if successful, or a negative error code on failure. + * Returns zero if successful, or a negative error code on failure. */ -int snd_register_device(int type, struct snd_card *card, int dev, - const struct file_operations *f_ops, void *private_data, - const char *name) +int snd_register_device_for_dev(int type, struct snd_card *card, int dev, + const struct file_operations *f_ops, + void *private_data, + const char *name, struct device *device) { int minor; struct snd_minor *preg; - struct device *device = snd_card_get_device_link(card); snd_assert(name, return -EINVAL); preg = kmalloc(sizeof *preg, GFP_KERNEL); @@ -272,7 +273,7 @@ int snd_register_device(int type, struct snd_card *card, int dev, return 0; } -EXPORT_SYMBOL(snd_register_device); +EXPORT_SYMBOL(snd_register_device_for_dev); /* find the matching minor record * return the index of snd_minor, or -1 if not found |