Re: [PATCH] ALSA: usb-audio: Fix "cannot set freq 48000 to ep 0x3" msgs

From: Joakim Tjernlund
Date: Thu Jun 01 2023 - 10:28:14 EST


Adding Michael Ralston <michael@xxxxxxxxxxxxx>

He did have problems with his behringer UMC404HD device when this whole seq. was removed.
Ralston, can you try if the below change affects your device?

Jocke

On Thu, 2023-06-01 at 15:11 +0200, Joakim Tjernlund wrote:
> On some USB speaker devices(Jabra/Logitech) we see above error
> msg when connecting device to computer and kernel is probing the device.
>
> Moving the snd_usb_init_sample_rate() to after usb_set_interface() makes
> the error go away.
>
> Signed-off-by: Joakim Tjernlund <joakim.tjernlund@xxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> ---
> sound/usb/stream.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/usb/stream.c b/sound/usb/stream.c
> index f10f4e6d3fb8..d9ac8663a48b 100644
> --- a/sound/usb/stream.c
> +++ b/sound/usb/stream.c
> @@ -1226,8 +1226,8 @@ static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip,
> /* try to set the interface... */
> usb_set_interface(chip->dev, iface_no, 0);
> snd_usb_init_pitch(chip, fp);
> - snd_usb_init_sample_rate(chip, fp, fp->rate_max);
> usb_set_interface(chip->dev, iface_no, altno);
> + snd_usb_init_sample_rate(chip, fp, fp->rate_max);
> }
> return 0;
> }