Although there is a patch resolving this issue (see https://lore.kernel.org/linux-usb/1jilzsy8g7.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u) it needs a little work and will not be ready for v5.14.0 release. Until then revert the series. v2: - Added SoB (Balbi) Ferry Toth (3): Revert "usb: gadget: u_audio: add real feedback implementation" Revert "usb: gadget: f_uac2: add adaptive sync support for capture" Revert "usb: gadget: f_uac2/u_audio: add feedback endpoint support" .../ABI/testing/configfs-usb-gadget-uac2 | 2 - Documentation/usb/gadget-testing.rst | 2 - drivers/usb/gadget/function/f_uac2.c | 144 +---------- drivers/usb/gadget/function/u_audio.c | 225 +----------------- drivers/usb/gadget/function/u_audio.h | 12 - drivers/usb/gadget/function/u_uac2.h | 4 - 6 files changed, 6 insertions(+), 383 deletions(-) -- 2.30.2