ALSA: hda - Turn off loopback mixing as default

So far, we enabled the loopback mixing control as default, as this
behavior made somewhat compatible with the earlier HD-audio drivers
for Realtek & co.  However, it's getting annoying as we've got more
and more bug reports about the noise coming from the loopback route.
Since the loopback mixing is used fairly rarely and often harmful
(e.g. using PA), let's get rid of the default turn-on lines.

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

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 320445f3bf736d51e3dcfc884cdf5f7aef0b3855..7e785487c67b7d180920b4921997aeff000cf5ee 100644 (file)
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -2492,10 +2492,6 @@ static int create_loopback_mixing_ctl(struct hda_codec *codec)
        if (!snd_hda_gen_add_kctl(spec, NULL, &loopback_mixing_enum))
                return -ENOMEM;
        spec->have_aamix_ctl = 1;
-       /* if no explicit aamix path is present (e.g. for Realtek codecs),
-        * enable aamix as default -- just for compatibility
-        */
-       spec->aamix_mode = !has_aamix_out_paths(spec);
        return 0;
 }