On Sun, 03 Jan 2021 19:15:48 +0100,
František Kučera wrote:
>
> Dne 03. 01. 21 v 18:19 Takashi Iwai napsal(a):
> > Could you give lsusb -v output as well as /proc/asound/card*/usbmixer
> > and stream* files? The proc files are at best from both older and new
> > kernels.
>
> Here are the files. They look same. The only difference is in the stream0, but it is probably only formatting. I also attached the kern.log from the new version.
Thanks.
It must be something specific to the devices with the fixed stream
qurik. Could you try the patch below?
Takashi
-- 8< --
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -155,9 +155,6 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
stream = (fp->endpoint & USB_DIR_IN)
? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
- err = snd_usb_add_audio_stream(chip, stream, fp);
- if (err < 0)
- goto error;
if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
fp->altset_idx >= iface->num_altsetting) {
err = -EINVAL;
@@ -176,6 +173,11 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
fp->datainterval = snd_usb_parse_datainterval(chip, alts);
if (fp->maxpacksize == 0)
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
+
+ err = snd_usb_add_audio_stream(chip, stream, fp);
+ if (err < 0)
+ goto error;
+
usb_set_interface(chip->dev, fp->iface, 0);
snd_usb_init_pitch(chip, fp);
snd_usb_init_sample_rate(chip, fp, fp->rate_max);
