Hi, here is the revised patch set for addressing the regression reported for Pioneer devices with the implicit feedback mode. Takashi === Takashi Iwai (5): ALSA: usb-audio: Fix the missing endpoints creations for quirks ALSA: usb-audio: Choose audioformat of a counter-part substream ALSA: usb-audio: Avoid unnecessary interface re-setup ALSA: usb-audio: Annotate the endpoint index in audioformat ALSA: usb-audio: Fix implicit feedback sync setup for Pioneer devices sound/usb/card.c | 5 +-- sound/usb/card.h | 3 ++ sound/usb/endpoint.c | 84 ++++++++++++++++++++++++++++++++++------ sound/usb/endpoint.h | 2 +- sound/usb/implicit.c | 55 +++++++++++++++++++------- sound/usb/quirks-table.h | 6 +++ sound/usb/quirks.c | 54 +++++++++++++++++++++----- sound/usb/usbaudio.h | 1 + 8 files changed, 169 insertions(+), 41 deletions(-) -- 2.26.2