From 2f0855497738a56825ee6445574835b4fc1d77d5 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 22 Feb 2008 18:43:50 +0100 Subject: [PATCH] [ALSA] hda-codec - Don't create vmaster if no slaves found Don't create vmaster controls if no slaves are found in the given list. This prevents the error due to an empty vmaster control. Signed-off-by: Takashi Iwai Signed-off-by: Linus Torvalds --- sound/pci/hda/hda_codec.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 5c6419ead015..37c413923db8 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1055,6 +1055,12 @@ int snd_hda_add_vmaster(struct hda_codec *codec, char *name, const char **s; int err; + for (s = slaves; *s && !snd_hda_find_mixer_ctl(codec, *s); s++) + ; + if (!*s) { + snd_printdd("No slave found for %s\n", name); + return 0; + } kctl = snd_ctl_make_virtual_master(name, tlv); if (!kctl) return -ENOMEM; -- 2.20.1