Instead of returning EBUSY when the busy flag is set in the ioctl, sleep

until whoever has it is done with it.

This is kept as flag/sleep condvars instead of a rwlock because later we
may want to quiesce the handler before suspend to make sure nothing is
sleeping on a chip that is about to be whacked (doing so will change the
proc so rwlocks won't work).

ok damien@

0 files changed, 0 insertions, 0 deletions