From owner-svn-src-stable-10@FreeBSD.ORG Tue Feb 4 09:06:28 2014 Return-Path: Delivered-To: svn-src-stable-10@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 AE7645AA; Tue, 4 Feb 2014 09:06:28 +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 980D1143B; Tue, 4 Feb 2014 09:06:28 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s1496SvP067224; Tue, 4 Feb 2014 09:06:28 GMT (envelope-from hselasky@svn.freebsd.org) Received: (from hselasky@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s1496S6J067223; Tue, 4 Feb 2014 09:06:28 GMT (envelope-from hselasky@svn.freebsd.org) Message-Id: <201402040906.s1496S6J067223@svn.freebsd.org> From: Hans Petter Selasky Date: Tue, 4 Feb 2014 09:06:28 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r261478 - stable/10/sys/dev/usb/input X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-10@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: SVN commit messages for only the 10-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Feb 2014 09:06:28 -0000 Author: hselasky Date: Tue Feb 4 09:06:28 2014 New Revision: 261478 URL: http://svnweb.freebsd.org/changeset/base/261478 Log: MFC r261228: When detaching a [USB] keyboard, keys might still be pressed. Ensure that all pressed keys are released before completing the USB keyboard detach. This will prevent so-called "ghost-keys" from appearing after that the USB device generating the key event(s) has been detached. Modified: stable/10/sys/dev/usb/input/ukbd.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/usb/input/ukbd.c ============================================================================== --- stable/10/sys/dev/usb/input/ukbd.c Tue Feb 4 09:06:07 2014 (r261477) +++ stable/10/sys/dev/usb/input/ukbd.c Tue Feb 4 09:06:28 2014 (r261478) @@ -473,7 +473,8 @@ ukbd_get_key(struct ukbd_softc *sc, uint || (sc->sc_flags & UKBD_FLAG_POLLING) != 0, ("not polling in kdb or panic\n")); - if (sc->sc_inputs == 0) { + if (sc->sc_inputs == 0 && + (sc->sc_flags & UKBD_FLAG_GONE) == 0) { /* start transfer, if not already started */ usbd_transfer_start(sc->sc_xfer[UKBD_INTR_DT]); } @@ -1319,6 +1320,18 @@ ukbd_detach(device_t dev) usb_callout_stop(&sc->sc_callout); + /* kill any stuck keys */ + if (sc->sc_flags & UKBD_FLAG_ATTACHED) { + /* stop receiving events from the USB keyboard */ + usbd_transfer_stop(sc->sc_xfer[UKBD_INTR_DT]); + + /* release all leftover keys, if any */ + memset(&sc->sc_ndata, 0, sizeof(sc->sc_ndata)); + + /* process releasing of all keys */ + ukbd_interrupt(sc); + } + ukbd_disable(&sc->sc_kbd); #ifdef KBD_INSTALL_CDEV