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From: Weongyo Jeong <weongyo@FreeBSD.org>
Date: Mon, 6 Sep 2010 22:10:57 +0000 (UTC)
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Subject: svn commit: r212271 - head/share/man/man4
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Author: weongyo
Date: Mon Sep  6 22:10:57 2010
New Revision: 212271
URL: http://svn.freebsd.org/changeset/base/212271

Log:
  Adds a CAVEATS section to mention DMA issues that currently only
  a solution is using PIO mode.  As fas as I know all open source based
  broadcom drivers for specially LP PHY has this issue because it's
  a reverse engineered driver from wl(4).
  
  Pointed by:	Warren Block <wblock at wonkity.com>

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

Modified: head/share/man/man4/bwn.4
==============================================================================
--- head/share/man/man4/bwn.4	Mon Sep  6 22:02:08 2010	(r212270)
+++ head/share/man/man4/bwn.4	Mon Sep  6 22:10:57 2010	(r212271)
@@ -125,6 +125,9 @@ The
 .Nm
 driver first appeared in
 .Fx 8.1 .
+.Sh CAVEATS
+Some LP PHY devices have DMA operation problems that in that case try to
+use PIO mode.
 .Sh AUTHORS
 .An -nosplit
 The