function checks that the mutex lock is owned. This fixes 'devctl disable re0' operation. Sponsored by: Innovate DSbD Differential Revision: https://reviews.freebsd.org/D26904
function checks that the mutex lock is owned. This fixes 'devctl disable re0' operation. Sponsored by: Innovate DSbD Differential Revision: https://reviews.freebsd.org/D26904