diff options
| -rw-r--r-- | include/sound/control.h | 1 | ||||
| -rw-r--r-- | sound/core/control.c | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/sound/control.h b/include/sound/control.h index eae443ba79ba..cc3dcc6cfb0f 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -138,6 +138,7 @@ int snd_ctl_remove(struct snd_card * card, struct snd_kcontrol * kcontrol); int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, bool add_on_replace); int snd_ctl_remove_id(struct snd_card * card, struct snd_ctl_elem_id *id); int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id *src_id, struct snd_ctl_elem_id *dst_id); +void snd_ctl_rename(struct snd_card *card, struct snd_kcontrol *kctl, const char *name); int snd_ctl_activate_id(struct snd_card *card, struct snd_ctl_elem_id *id, int active); struct snd_kcontrol *snd_ctl_find_numid(struct snd_card * card, unsigned int numid); struct snd_kcontrol *snd_ctl_find_id(struct snd_card * card, struct snd_ctl_elem_id *id); diff --git a/sound/core/control.c b/sound/core/control.c index a7271927d875..50e7ba66f187 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -753,6 +753,29 @@ int snd_ctl_rename_id(struct snd_card *card, struct snd_ctl_elem_id *src_id, } EXPORT_SYMBOL(snd_ctl_rename_id); +/** + * snd_ctl_rename - rename the control on the card + * @card: the card instance + * @kctl: the control to rename + * @name: the new name + * + * Renames the specified control on the card to the new name. + * + * Make sure to take the control write lock - down_write(&card->controls_rwsem). + */ +void snd_ctl_rename(struct snd_card *card, struct snd_kcontrol *kctl, + const char *name) +{ + remove_hash_entries(card, kctl); + + if (strscpy(kctl->id.name, name, sizeof(kctl->id.name)) < 0) + pr_warn("ALSA: Renamed control new name '%s' truncated to '%s'\n", + name, kctl->id.name); + + add_hash_entries(card, kctl); +} +EXPORT_SYMBOL(snd_ctl_rename); + #ifndef CONFIG_SND_CTL_FAST_LOOKUP static struct snd_kcontrol * snd_ctl_find_numid_slow(struct snd_card *card, unsigned int numid) |