From patchwork Wed Apr 14 05:28:30 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Shah X-Patchwork-Id: 50108 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id A9676B7D1E for ; Wed, 14 Apr 2010 16:03:39 +1000 (EST) Received: from localhost ([127.0.0.1]:56121 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O1vg1-0002V8-VM for incoming@patchwork.ozlabs.org; Wed, 14 Apr 2010 02:02:17 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O1vBs-0002MA-Ku for qemu-devel@nongnu.org; Wed, 14 Apr 2010 01:31:08 -0400 Received: from [140.186.70.92] (port=49070 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O1vBr-0002LW-0J for qemu-devel@nongnu.org; Wed, 14 Apr 2010 01:31:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O1vBo-00061w-Vd for qemu-devel@nongnu.org; Wed, 14 Apr 2010 01:31:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61885) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O1vBo-00061m-MA for qemu-devel@nongnu.org; Wed, 14 Apr 2010 01:31:04 -0400 Received: from int-mx04.intmail.prod.int.phx2.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.17]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o3E5V35s021542 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 14 Apr 2010 01:31:03 -0400 Received: from localhost (vpn-236-230.phx2.redhat.com [10.3.236.230]) by int-mx04.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o3E5UwGD004120; Wed, 14 Apr 2010 01:31:02 -0400 From: Amit Shah To: Anthony Liguori Date: Wed, 14 Apr 2010 10:58:30 +0530 Message-Id: <1271222917-7803-11-git-send-email-amit.shah@redhat.com> In-Reply-To: <1271222917-7803-10-git-send-email-amit.shah@redhat.com> References: <1271222917-7803-1-git-send-email-amit.shah@redhat.com> <1271222917-7803-2-git-send-email-amit.shah@redhat.com> <1271222917-7803-3-git-send-email-amit.shah@redhat.com> <1271222917-7803-4-git-send-email-amit.shah@redhat.com> <1271222917-7803-5-git-send-email-amit.shah@redhat.com> <1271222917-7803-6-git-send-email-amit.shah@redhat.com> <1271222917-7803-7-git-send-email-amit.shah@redhat.com> <1271222917-7803-8-git-send-email-amit.shah@redhat.com> <1271222917-7803-9-git-send-email-amit.shah@redhat.com> <1271222917-7803-10-git-send-email-amit.shah@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.17 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. Cc: qemu list , Amit Shah , Gerd Hoffmann , Juan Quintela Subject: [Qemu-devel] [PATCH v5 10/17] virtio-serial: Send out guest data to ports only if port is opened X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Data should be written only when ports are open. Signed-off-by: Amit Shah --- hw/virtio-serial-bus.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index 3a09f0d..6befd4d 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -335,6 +335,11 @@ static void handle_output(VirtIODevice *vdev, VirtQueue *vq) goto next_buf; } + if (!port->host_connected) { + ret = 0; + goto next_buf; + } + /* * A port may not have any handler registered for consuming the * data that the guest sends or it may not have a chardev associated