From: Paul Bonser misterpib@gmail.com
The Akai MPC Element incorrectly reports its bInterfaceClass as 255, but otherwise implements the USB MIDI spec correctly.
This adds a quirks-table.h entry which allows the device to be recognized as a standard USB MIDI device.
Signed-off-by: Paul Bonser misterpib@gmail.com --- diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 8590a32..e869b6c 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -2516,6 +2516,28 @@ YAMAHA_DEVICE(0x7010, "UB99"), } },
+{ + /* Akai MPC Element */ + USB_DEVICE(0x09e8, 0x0021), + .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = & (const struct snd_usb_audio_quirk[]) { + { + .ifnum = 0, + .type = QUIRK_IGNORE_INTERFACE + }, + { + .ifnum = 1, + .type = QUIRK_MIDI_STANDARD_INTERFACE + }, + { + .ifnum = -1 + } + } + } +}, + /* TerraTec devices */ { USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0012),