From 4808d12d1dddb046ec86425e5f6766f02e950292 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 10 Jan 2012 15:16:02 +0100 Subject: [PATCH] ALSA: hda - Fix the detection of "Loopback Mixing" control for VIA codecs Currently the driver checks only the out_mix_path[] for the primary output route for judging whether to create the loopback-mixing control or not. But, there are cases where aamix-routing is available only on headphone or speaker paths but not on the primary output path. So, the driver ignores such cases inappropriately. This patch fixes the check of the loopback-mixing control by testing all mix-routing paths. Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_via.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index ab56866cc94e..03e63fed9caf 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -2208,7 +2208,10 @@ static int via_auto_create_loopback_switch(struct hda_codec *codec) { struct via_spec *spec = codec->spec; - if (!spec->aa_mix_nid || !spec->out_mix_path.depth) + if (!spec->aa_mix_nid) + return 0; /* no loopback switching available */ + if (!(spec->out_mix_path.depth || spec->hp_mix_path.depth || + spec->speaker_path.depth)) return 0; /* no loopback switching available */ if (!via_clone_control(spec, &via_aamix_ctl_enum)) return -ENOMEM; -- 2.20.1