[PATCH] Fix callouts in rp(4): test or the driver will be removed

[John Baldwin]

This patch converts rp(4) from timeout(9) to callout(9).  To do this cleanly, 
it replaces a single, global timer that walks tables of controllers and ports 
to a per-controller timer.  This works much better with locking (since the 
locks are per-controller) and removes the need for various global lookup 
tables in the driver.  The patch is against HEAD but probably applies to 9 and 
10 as well.

http://people.freebsd.org/~jhb/patches/rp_callout.patch

Note that this driver is using a deprecated API that will be removed in 11.  
If no one tests updates to this driver then it is not feasible to continue 
maintaining it in the tree.  In that case, it will be removed from HEAD one 
month from today.

-- 
John Baldwin