re: kern/46545: pad(4):Support for fullduplex playback/recording polling and nonblocking mode

[matthew green <mrg%eterna.com.au@localhost>]

>  
> softint_schedule(368,c160e400,400,c01fadfc,c15f3800,0,c14fddc0,0,c165f430,c165f020)
>  
>  at netbsd:softint_schedule+0xec
>  
>  
> audio_pint(c15f3800,400,c8775c7c,c080787e,bd00,c165f014,c165f024,c15f3800,c01fadfc,0)
>  
>  at netbsd:audio_pint+0x31d

softint_schedule() must be called with kernel preemption disabled.
ie, call kpreempt_disable() before and kpreempt_enable() around
calling softint_schedule().


.mrg.