>> for DVF_ACTIVE and a device-softc "enabled" flag, but not IFF_RUNNING.
>
>Yes, since they were initially drivers only for isa card.  And,
>acutally, if irq isn't shared, testing enabled flag or IFF_RUNNING are
>same, since interrupts are blocked during ioctl.

Sure. but a typical i386 config is to share interrupts: if nothing
else, with a second pc-card slot.

[...]

>So, the answer is test IFF_RUNNING instead of enabled flag.

I was being conservative and testing both, as I'm using these as the
basis for 1.5 pullup requests.