When using the Digimode-4-Yaesu device in the link below, an "audio output data underrun" error occurs when the device is outputting audio. Received (input) audio works as expected. The issue does not occur in kernel 5.10 but does in 5.15.

http://xggcomms.com/Yaesu-Interface-Shop(2066629).html

Below is some info about the device and driver.


T:  Bus=01 Lev=03 Prnt=09 Port=01 Cnt=02 Dev#= 12 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0403 ProdID=6001 Rev= 6.00
S:  Manufacturer=FTDI
S:  Product=FT232R USB UART
S:  SerialNumber=AG6JN65M
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr= 90mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=ftdi_sio
E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms