Call for testing: emu10kx driver for Creative sound cards

[Yuriy Tsibizov]

> + .Pp
> + Sysctl nodes provided by drivers should not be considered to be
> + permanant unless they are documented in the driver's man page.
> + Names which start with _ denote a tree or node which is considered
> + impermanant and should not be relied up by code elsewhere in the
> + system.
> + Driver writers should use the sysctl infrastructure provided by
> + .Xr device_get_sysctl_ctx 9 
> + and
> + .Xr device_get_sysctl_tree 9
> + for their sysctls.
> + Drivers should migrate from past interfaces to this new 
> interface, but
> + provide, where needed, backwards compatibility shims.
> + These facilities export the sysctl as 
> dev.<driver-name>.<unit>.attribute.

Should sound drivers (pcm* device) be documented as an exception from this? 
They use snd_sysctl_tree_top() to get tree OID under hw.snd.pcmX and 
snd_sysctl_tree() to get their context.

Yuriy.