Caelia Chapin wrote:
> On Thu, Feb 23, 2017 at 5:14 AM, Clemens Ladisch wrote:
> This might be a bug in the firmware of your device (I guess the driver
> shipped with it does not bother to ask for the clock source status, and so
> this function was never tested).
>
> Do you know how to recompile your kernel?
>
> Yes, I've done it many times - though it has been a few years. What specific
> customizations would you suggest?
In sound/usb/clock.c, around line 192, try to remove this:
if (validate && !uac_clock_source_is_valid(chip, entity_id)) {
usb_audio_err(chip,
"clock source %d is not valid, cannot use\n",
entity_id);
return -ENXIO;
}
Regards,
Clemens
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