ALSA: vmaster: Add snd_ctl_sync_vmaster() helper function

Introduce a new helper function, snd_ctl_sync_vmaster(), which updates
the slave put callbacks forcibly as well as calling the hook.  This
will be used in the upcoming patch in HD-audio codec driver for
toggling the mute in vmaster slaves.

Along with the new function, the old snd_ctl_sync_vmaster_hook() is
replaced as a macro calling with the argument hook_only=true.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/sound/control.h b/include/sound/control.h
index 34bc93d80d55..5358892b1b39 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -233,7 +233,8 @@ snd_ctl_add_slave_uncached(struct snd_kcontrol *master,
 int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl,
                              void (*hook)(void *private_data, int),
                              void *private_data);
-void snd_ctl_sync_vmaster_hook(struct snd_kcontrol *kctl);
+void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
+#define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true)
 
 /*
  * Helper functions for jack-detection controls