• Devin Heitmueller's avatar
    Add USB quirk for HVR-950q to avoid intermittent device resets · 6836796d
    Devin Heitmueller authored
    The USB core and sysfs will attempt to enumerate certain parameters
    which are unsupported by the au0828 - causing inconsistent behavior
    and sometimes causing the chip to reset.  Avoid making these calls.
    
    This problem manifested as intermittent cases where the au8522 would
    be reset on analog video startup, in particular when starting up ALSA
    audio streaming in parallel - the sysfs entries created by
    snd-usb-audio on streaming startup would result in unsupported control
    messages being sent during tuning which would put the chip into an
    unknown state.
    Signed-off-by: default avatarDevin Heitmueller <dheitmueller@kernellabs.com>
    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    6836796d
quirks.c 10.7 KB