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SubjectCommit a551d91473 (ALSA: hda - Use regmap for command verb caches, too) breaks TOSLINK
Hi,

since commit a551d914:
Author: Takashi Iwai <tiwai@suse.de>
Date: Thu Feb 26 12:34:49 2015 +0100

ALSA: hda - Use regmap for command verb caches, too

my DAC receives no signal over TOSLINK-S/PDIF anymore.

Reverting the commit on top of the current Linus tree "fixes" the issue.

% aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 3: VT1708S Digital [VT1708S Digital]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ID 791a Digital [ID 791a Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0

[VT1708S Digital] is the device I use.

# cat /etc/asound.conf
pcm.!default {
type hw
card 0
device 3
}

ctl.!default {
type hw
card 0
device 3
}

pcm.crossfeed {
type plug
slave.pcm "ladspa"
}

pcm.guitar {
type plug
slave.pcm "ladspa2"
}

pcm.ladspa {
type ladspa
slave.pcm "plughw:0,3";
path "/usr/lib/ladspa";
plugins [
{
label bs2b
input {
controls [ 700 4 ]
}
}
]
}

pcm.ladspa2{
type ladspa
slave.pcm "plughw:2,0";
path "/usr/lib/ladspa";
plugins [
{
label bs2b
input {
controls [ 700 4 ]
}
}
]
}

--
Markus


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