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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Mon, 20 Dec 2010 17:39:39 +0000 (UTC)
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Subject: svn commit: r216596 - head/share/man/man4
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Author: yongari
Date: Mon Dec 20 17:39:39 2010
New Revision: 216596
URL: http://svn.freebsd.org/changeset/base/216596

Log:
  Document limitation of station address reprogramming.

Modified:
  head/share/man/man4/jme.4

Modified: head/share/man/man4/jme.4
==============================================================================
--- head/share/man/man4/jme.4	Mon Dec 20 17:28:15 2010	(r216595)
+++ head/share/man/man4/jme.4	Mon Dec 20 17:39:39 2010	(r216596)
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 18, 2010
+.Dd December 20, 2010
 .Dt JME 4
 .Os
 .Sh NAME
@@ -166,3 +166,15 @@ driver was written by
 .Aq yongari@FreeBSD.org .
 It first appeared in
 .Fx 7.1 .
+.Sh CAVEATS
+The
+.Nm
+driver tries to avoid unnecessary station address reprogramming for
+controllers that use eFuse to store station address.
+The number of times that eFuse can be safely reprogrammed is 16 at
+most.
+In addition, there is no way to restore factory default station
+address once station address is reprogrammed via eFuse.
+It is highly recommended not to reprogram station address and
+it is responsibility of administrator to store original station
+address into a safe place when station address should be changed.