nightmixes wrote:
> kernel: usb 3-2: [4] FU [Line Playback Switch] ch = 1, val = 0/1/1
> kernel: usb 3-2: [4] FU [Line Playback Volume] ch = 2, val = 0/255/1
> kernel: usb 3-2: [2] FU [Line Playback Switch] ch = 1, val = 0/1/1
> kernel: usb 3-2: [2] FU [Line Playback Volume] ch = 2, val = 0/255/1
> kernel: usb 3-2: [7] FU [Master Playback Switch] ch = 1, val = 0/1/1
> kernel: usb 3-2: [7] FU [Master Playback Volume] ch = 2, val = 0/255/1
> kernel: usb 3-2: MU 11 has no bmControls field
There's the culprit. Ignoring mixer unit 11 also ignores all other
units connected as sources.
Try moving the bmControls check until after the source units have
been parsed, as in the patch below.
Regards,
Clemens
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1582,18 +1582,15 @@ static int parse_audio_mixer_unit(struct
unitid);
return -EINVAL;
}
- /* no bmControls field (e.g. Maya44) -> ignore */
- if (desc->bLength <= 10 + input_pins) {
- usb_audio_dbg(state->chip, "MU %d has no bmControls field\n",
- unitid);
- return 0;
- }
num_ins = 0;
ich = 0;
for (pin = 0; pin < input_pins; pin++) {
err = parse_audio_unit(state, desc->baSourceID[pin]);
if (err < 0)
continue;
+ /* no bmControls field (e.g. Maya44) -> ignore */
+ if (desc->bLength <= 10 + input_pins)
+ continue;
err = check_input_term(state, desc->baSourceID[pin], &iterm);
if (err < 0)
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