ALSA: usbaudio: Fix wrong bitrate for Creative Creative VF0470 Live Cam

This patch works around misbehaviour of Creative Creative VF0470 Live Cam
which reports 16 kHz sample rate for audio capture while actually producing
8 kHz stream.

Signed-off-by: Arseniy Lartsev <arseniy@fizlesh.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 20b656e9f90d9aa1c9abb2ba59cff225fce888f3..ea3eaa53d637c8caca911f7ba1a96f107a524234 100644 (file)
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -2581,6 +2581,9 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
                             chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
                            fp->altsetting == 5 && fp->maxpacksize == 392)
                                rate = 96000;
+                       /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */
+                       if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068))
+                               rate = 8000;
                        fp->rate_table[fp->nr_rates] = rate;
                        if (!fp->rate_min || rate < fp->rate_min)
                                fp->rate_min = rate;