"Playback Design" products need a 50ms delay after setting the USB interface.
Signed-off-by: Daniel Mack zonque@gmail.com Reported-by: Andreas Koch andreas@akdesigninc.com --- sound/usb/pcm.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index f94397b..c263991 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -350,6 +350,13 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) fmt->iface, fmt->altsetting); subs->interface = fmt->iface; subs->altset_idx = fmt->altset_idx; + + /* + * "Playback Design" products need a 50ms delay after setting the + * USB interface. + */ + if (le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) + mdelay(50); }
subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip,