[ALSA] usb-audio: add UM-1EX/UM-2EX information

Modules: USB generic driver

Add comments with information about UM-1EX/UM-2EX devices.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

diff --git a/sound/usb/usbquirks.h b/sound/usb/usbquirks.h
index edb8887..bb7829c 100644 (file)
--- a/sound/usb/usbquirks.h
+++ b/sound/usb/usbquirks.h
@@ -294,7 +294,8 @@ YAMAHA_DEVICE(0x7010, "UB99"),
        }
 },
 {
-       /* a later revision uses ID 0x0099 */
+       /* Has ID 0x0099 when not in "Advanced Driver" mode.
+        * The UM-2EX has only one input, but we cannot detect this. */
        USB_DEVICE(0x0582, 0x0005),
        .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
                .vendor_name = "EDIROL",
@@ -385,7 +386,7 @@ YAMAHA_DEVICE(0x7010, "UB99"),
        }
 },
 {
-       /* a later revision uses ID 0x009d */
+       /* has ID 0x009d when not in "Advanced Driver" mode */
        USB_DEVICE(0x0582, 0x0009),
        .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
                .vendor_name = "EDIROL",