Hi Jiri and Takashi, I'm not sure how it works with two different maintained trees but this patch set needs to be applied and flow upstream together. If the HID patch is applied without the ALSA patch then mute sync issues will occur with multiple Poly/Plantronics product families. This patch set was tested by Wade and myself with multiple Poly/Plantronics product family headsets. Hi Wade, Please feel free to add your Signed-off-by: and/or Tested-by: tags, as you see fit. Thanks, Terry Terry Junge (2): HID: hid-plantronics: Add mic mute mapping and generalize quirks ALSA: usb-audio: Add quirk for Plantronics headsets to fix control names drivers/hid/hid-plantronics.c | 135 ++++++++++++++++------------------ sound/usb/mixer_quirks.c | 35 +++++++++ 2 files changed, 100 insertions(+), 70 deletions(-) base-commit: 28eb75e178d389d325f1666e422bc13bbbb9804c -- 2.43.0