From owner-svn-src-all@FreeBSD.ORG  Mon Mar 17 06:36:55 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 46538A0D;
 Mon, 17 Mar 2014 06:36:55 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 31E75894;
 Mon, 17 Mar 2014 06:36:55 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s2H6atqT096116;
 Mon, 17 Mar 2014 06:36:55 GMT
 (envelope-from hselasky@svn.freebsd.org)
Received: (from hselasky@localhost)
 by svn.freebsd.org (8.14.8/8.14.8/Submit) id s2H6atVi096115;
 Mon, 17 Mar 2014 06:36:55 GMT
 (envelope-from hselasky@svn.freebsd.org)
Message-Id: <201403170636.s2H6atVi096115@svn.freebsd.org>
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Mon, 17 Mar 2014 06:36:55 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org
Subject: svn commit: r263260 - stable/9/sys/dev/usb/input
X-SVN-Group: stable-9
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Mar 2014 06:36:55 -0000

Author: hselasky
Date: Mon Mar 17 06:36:54 2014
New Revision: 263260
URL: http://svnweb.freebsd.org/changeset/base/263260

Log:
  MFC r262972:
  Ignore USB keyboard driver calls from critical sections.

Modified:
  stable/9/sys/dev/usb/input/ukbd.c
Directory Properties:
  stable/9/sys/   (props changed)
  stable/9/sys/dev/   (props changed)

Modified: stable/9/sys/dev/usb/input/ukbd.c
==============================================================================
--- stable/9/sys/dev/usb/input/ukbd.c	Mon Mar 17 05:45:29 2014	(r263259)
+++ stable/9/sys/dev/usb/input/ukbd.c	Mon Mar 17 06:36:54 2014	(r263260)
@@ -1890,6 +1890,12 @@ ukbd_ioctl(keyboard_t *kbd, u_long cmd, 
 	int result;
 
 	/*
+	 * XXX Check of someone is calling us from a critical section:
+	 */
+	if (curthread->td_critnest != 0)
+		return (EDEADLK);
+
+	/*
 	 * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any
 	 * context where printf(9) can be called, which among other things
 	 * includes interrupt filters and threads with any kinds of locks