• Jurgen Kramer's avatar
    ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices · 6e84a8d7
    Jurgen Kramer authored
    This patch adds a USB control message delay quirk for a few specific Marantz/Denon
    devices. Without the delay the DACs will not work properly and produces the
    following type of messages:
    
    Nov 15 10:09:21 orwell kernel: [   91.342880] usb 3-13: clock source 41 is not valid, cannot use
    Nov 15 10:09:21 orwell kernel: [   91.343775] usb 3-13: clock source 41 is not valid, cannot use
    
    There are likely other Marantz/Denon devices using the same USB module which exhibit the
    same problems. But as this cannot be verified I limited the patch to the devices
    I could test.
    
    The following two devices are covered by this path:
    - Marantz SA-14S1
    - Marantz HD-DAC1
    Signed-off-by: default avatarJurgen Kramer <gtmkramer@xs4all.nl>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    6e84a8d7
quirks.c 35.3 KB