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    Subject[patch 005/176] ALSA: snd-usb-us122l: Fix MIDI output
    2.6.36-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Karsten Wiese <fzu@wemgehoertderstaat.de>

    commit 921eebdc18c82268eab446592191b39e35d031d6 upstream.

    The US-122L always reads 9 bytes per urb unless they are set to 0xFD.

    Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    sound/usb/midi.c | 11 +++++++++--
    1 file changed, 9 insertions(+), 2 deletions(-)

    --- a/sound/usb/midi.c
    +++ b/sound/usb/midi.c
    @@ -843,8 +843,8 @@ static void snd_usbmidi_us122l_output(st
    return;
    }

    - memset(urb->transfer_buffer + count, 0xFD, 9 - count);
    - urb->transfer_buffer_length = count;
    + memset(urb->transfer_buffer + count, 0xFD, ep->max_transfer - count);
    + urb->transfer_buffer_length = ep->max_transfer;
    }

    static struct usb_protocol_ops snd_usbmidi_122l_ops = {
    @@ -1288,6 +1288,13 @@ static int snd_usbmidi_out_endpoint_crea
    case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */
    ep->max_transfer = 4;
    break;
    + /*
    + * Some devices only work with 9 bytes packet size:
    + */
    + case USB_ID(0x0644, 0x800E): /* Tascam US-122L */
    + case USB_ID(0x0644, 0x800F): /* Tascam US-144 */
    + ep->max_transfer = 9;
    + break;
    }
    for (i = 0; i < OUTPUT_URBS; ++i) {
    buffer = usb_alloc_coherent(umidi->dev,



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