From patchwork Wed Mar 31 07:34:01 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Shah X-Patchwork-Id: 49113 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 F2F3EB7C7E for ; Wed, 31 Mar 2010 20:36:51 +1100 (EST) Received: from localhost ([127.0.0.1]:49482 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NwuLd-00088U-O6 for incoming@patchwork.ozlabs.org; Wed, 31 Mar 2010 05:36:29 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NwuH1-00058V-6t for qemu-devel@nongnu.org; Wed, 31 Mar 2010 05:31:43 -0400 Received: from [140.186.70.92] (port=41547 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NwuGz-00055u-4h for qemu-devel@nongnu.org; Wed, 31 Mar 2010 05:31:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1NwuGx-0002xq-Ll for qemu-devel@nongnu.org; Wed, 31 Mar 2010 05:31:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:19839) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1NwsTJ-0007CF-5B for qemu-devel@nongnu.org; Wed, 31 Mar 2010 03:36:18 -0400 Received: from int-mx03.intmail.prod.int.phx2.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o2V7aBGN020863 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 31 Mar 2010 03:36:11 -0400 Received: from localhost (vpn-235-197.phx2.redhat.com [10.3.235.197]) by int-mx03.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o2V7a9RV031732; Wed, 31 Mar 2010 03:36:10 -0400 From: Amit Shah To: qemu list Date: Wed, 31 Mar 2010 13:04:01 +0530 Message-Id: <1270020848-15526-11-git-send-email-amit.shah@redhat.com> In-Reply-To: <1270020848-15526-10-git-send-email-amit.shah@redhat.com> References: <1270020848-15526-1-git-send-email-amit.shah@redhat.com> <1270020848-15526-2-git-send-email-amit.shah@redhat.com> <1270020848-15526-3-git-send-email-amit.shah@redhat.com> <1270020848-15526-4-git-send-email-amit.shah@redhat.com> <1270020848-15526-5-git-send-email-amit.shah@redhat.com> <1270020848-15526-6-git-send-email-amit.shah@redhat.com> <1270020848-15526-7-git-send-email-amit.shah@redhat.com> <1270020848-15526-8-git-send-email-amit.shah@redhat.com> <1270020848-15526-9-git-send-email-amit.shah@redhat.com> <1270020848-15526-10-git-send-email-amit.shah@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.16 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. Cc: Amit Shah , "Michael S. Tsirkin" , Gerd Hoffmann , Juan Quintela Subject: [Qemu-devel] [PATCH 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 33083af..236e300 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