[ALSA] usb-audio - restrict Audigy 2 NX frequencies to 48/96 kHz

USB generic driver
On the SB Audigy 2 NX, frequency feedback doesn't quite work
when playing at 44.1 kHz, so temporarily disable this frequency.

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

1 files changed, 5 insertions, 3 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 08c5efcf5be..e4b91045ca1 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -2422,15 +2422,17 @@ static int parse_audio_format(struct usb_device *dev, struct audioformat *fp,
         if (err < 0)
                 return err;
 #if 1
-        /* FIXME: temporary hack for extigy */
+        /* FIXME: temporary hack for extigy/audigy 2 nx */
         /* extigy apparently supports sample rates other than 48k
          * but not in ordinary way.  so we enable only 48k atm.
          */
         if (le16_to_cpu(dev->descriptor.idVendor) == 0x041e && 
-            le16_to_cpu(dev->descriptor.idProduct) == 0x3000) {
+            (le16_to_cpu(dev->descriptor.idProduct) == 0x3000 ||
+             le16_to_cpu(dev->descriptor.idProduct) == 0x3020)) {
                 if (fmt[3] == USB_FORMAT_TYPE_I &&
                     stream == SNDRV_PCM_STREAM_PLAYBACK &&
-                    fp->rates != SNDRV_PCM_RATE_48000)
+                    fp->rates != SNDRV_PCM_RATE_48000 &&
+                    fp->rates != SNDRV_PCM_RATE_96000)
                         return -1; /* use 48k only */
         }
 #endif