The Pioneer lacks the UAC descriptors (added to quircks). It also needs a fix in synchronisation handling for those cases that bSynchAddress == 0 Ard van Breemen (2): Skip bSynchAddress endpoint check if it is invalid. Add Pioneer DDJ-SX3 PCM quirck. sound/usb/pcm.c | 1 + sound/usb/quirks-table.h | 57 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) -- 2.17.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel