GENERIC: add missing snd_uaudio for amd64 and i386

[christos]

Summary

The sound(4) man page states that snd_uaudio(4) is enabled by default on
amd64, i386 and powerpc, but it's currently only enabled on powerpc.

Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks

[emaste]

I think this is fine, but think it would be nice to generally prefer modules for sound devices.
Certainly having snd_uaudio compiled in is likely to be more broadly useful than other devices in this list, like snd_via8233.

[markj]

I don't have snd_uaudio compiled in my desktop's kernel, yet it gets loaded automatically and works without any intervention. Generally, we don't compile USB endpoint drivers into the kernel at all. So, I don't see the purpose of this change.

[christos]

In D43395#989264, @markj wrote:

I don't have snd_uaudio compiled in my desktop's kernel, yet it gets loaded automatically and works without any intervention. Generally, we don't compile USB endpoint drivers into the kernel at all. So, I don't see the purpose of this change.

Didn't know that. Thanks!

Should we abandon this and remove it from powerpc as well then?

[markj]

In D43395#989265, @christos wrote:

In D43395#989264, @markj wrote:

Should we abandon this and remove it from powerpc as well then?

I can't see any reason to fiddle with it. FreeBSD/powerpc is not widely used. It's better to focus effort elsewhere IMO.

[emaste]

We ought to correct the man page though -- maybe "USB driver module as needed" or something

[christos]

In D43395#989273, @emaste wrote:

We ought to correct the man page though -- maybe "USB driver module as needed" or something

https://reviews.freebsd.org/D43397