--- sound/usb/usbaudio.c

+++ sound/usb/usbaudio.c

@@ -3326,6 +3326,32 @@ static int snd_usb_cm6206_boot_quirk(str

}

/*

+ * This call will put the synth in "USB send" mode, i.e it will send MIDI

+ * messages through USB (this is disabled at startup). The synth will

+ * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB

+ * sign on its LCD. Values here are chosen based on sniffing USB traffic

+ * under Windows.

+ */

+static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)

+{

+ int err, actual_length;

+

+ /* "midi send" enable */

+ static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };

+

+ void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);

+ if (!buf)

+ return -ENOMEM;

+ err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,

+ ARRAY_SIZE(seq), &actual_length, 1000);

+ kfree(buf);

+ if (err < 0)

+ return err;

+

+ return 0;

+}

+

+/*

* Setup quirks

*/

#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */

@@ -3616,6 +3642,12 @@ static void *snd_usb_audio_probe(struct

goto __err_val;

}

+ /* Access Music VirusTI Desktop */

+ if (id == USB_ID(0x133e, 0x0815)) {

+ if (snd_usb_accessmusic_boot_quirk(dev) < 0)

+ goto __err_val;

+ }

+

/*

* found a config. now register to ALSA

*/