On Tue, 08 Jun 2021 09:15:01 +0200, Damien Zammit wrote: > --- a/sound/usb/pcm.c > +++ b/sound/usb/pcm.c > @@ -197,6 +197,10 @@ int snd_usb_init_pitch(struct snd_usb_audio *chip, > if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) > return 0; > > + /* Denon DN-X1600 doesn't properly handle this, bail out too */ > + if (chip->usb_id == USB_ID(0x154e, 0x500e)) > + return 0; > + Do we need this part? If this is required, it means that the audioformat sets UAC_EP_CS_ATTR_PITCH_CONTROL incorrectly. Also, at the next time, please put maintainers to Cc. This will avoid overlooks from maintainers side. thanks, Takashi