Re: [PATCH] ALSA: usb-audio: Apply sample rate quirk to Logitech Connect

[Joakim Tjernlund]

On Wed, 2021-03-24 at 13:49 +0100, Takashi Iwai wrote:
> On Wed, 24 Mar 2021 13:03:14 +0100,
> Ikjoon Jang wrote:
> > 
> > On Wed, Mar 24, 2021, 7:16 PM Joakim Tjernlund <Joakim.Tjernlund@xxxxxxxxxxxx>
> > wrote:
> > 
> 
> The Logitech devices with 046d:* should be covered generally in
> snd_usb_ctl_msg_quirk(), so I guess it's a different problem.
> But please check it first.
> 
> > And 20ms can be too long if it's applied to every control transfer. I will
> > test the device with shorter delay if you didn't try it before.
> 
> Actually the delay applied to Logitech devices is from 1 to 2ms, not
> 20ms.  The 20ms delay is applied for some other devices.  But if
> extending the delay fixes the problem, we need to reconsider the delay
> length.
> 

There are a lot of devices USB Audio devices that need that 1-2 ms delay. Have
you considered to make this delay generic(for all Audio USB devices) ?
Seems like Windows has something similar as these devices just work there.

 Jocke