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From: John Baldwin <jhb@freebsd.org>
To: freebsd-current@freebsd.org
Subject: [PATCH] Lock mse(4)
Date: Fri, 19 Sep 2014 15:42:08 -0400
Message-ID: <2736208.I8bkODsJvN@ralph.baldwin.cx>
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This patch adds locking to mse(4) and marks it MPSAFE.  It also adds some 
other cleanups such as using bus_*() instead of bus_space_*() and 
consolidating duplicate copies of its detach routine.  The patch is against 
HEAD but probably applies to 9 and 10 as well.

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

-- 
John Baldwin