From patchwork Fri Jun 16 13:23:05 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 776719 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wq1Kw14klz9s0Z for ; Fri, 16 Jun 2017 23:24:04 +1000 (AEST) Received: from localhost ([::1]:58878 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLrEH-00054o-3l for incoming@patchwork.ozlabs.org; Fri, 16 Jun 2017 09:24:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48293) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLrDg-000532-Qu for qemu-devel@nongnu.org; Fri, 16 Jun 2017 09:23:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dLrDe-0006zd-S3 for qemu-devel@nongnu.org; Fri, 16 Jun 2017 09:23:24 -0400 Received: from chuckie.co.uk ([82.165.15.123]:53170 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dLrDe-0006z3-Ki for qemu-devel@nongnu.org; Fri, 16 Jun 2017 09:23:22 -0400 Received: from host109-151-5-7.range109-151.btcentralplus.com ([109.151.5.7] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dLrDc-00045M-Hq; Fri, 16 Jun 2017 14:23:21 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, lersek@redhat.com, somlo@cmu.edu, ehabkost@redhat.com, mst@redhat.com, pbonzini@redhat.com, rjones@redhat.com, imammedo@redhat.com, peter.maydell@linaro.org Date: Fri, 16 Jun 2017 14:23:05 +0100 Message-Id: <1497619387-11333-4-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1497619387-11333-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1497619387-11333-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 109.151.5.7 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCHv4 3/5] fw_cfg: move assert() and linking of fw_cfg device to the machine into instance_init() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" In preparation for calling fw_cfg_init1() during realize rather than during init, move the assert() checking for existing fw_cfg devices and the linking of the device to the machine with object_property_add_child() to a new fw_cfg instance_init() function. This guarantees that we will still assert() correctly if more than one fw_cfg device is instantiated by accident. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laszlo Ersek --- hw/nvram/fw_cfg.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index e217239..39fcc04 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -916,10 +916,6 @@ static void fw_cfg_init1(DeviceState *dev) MachineState *machine = MACHINE(qdev_get_machine()); uint32_t version = FW_CFG_VERSION; - assert(!object_resolve_path(FW_CFG_PATH, NULL)); - - object_property_add_child(OBJECT(machine), FW_CFG_NAME, OBJECT(s), NULL); - qdev_init_nofail(dev); fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); @@ -1021,6 +1017,15 @@ FWCfgState *fw_cfg_find(void) return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); } +static void fw_cfg_init(Object *obj) +{ + MachineState *machine = MACHINE(qdev_get_machine()); + + assert(!object_resolve_path(FW_CFG_PATH, NULL)); + + object_property_add_child(OBJECT(machine), FW_CFG_NAME, obj, NULL); +} + static void fw_cfg_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -1034,6 +1039,7 @@ static const TypeInfo fw_cfg_info = { .parent = TYPE_SYS_BUS_DEVICE, .abstract = true, .instance_size = sizeof(FWCfgState), + .instance_init = fw_cfg_init, .class_init = fw_cfg_class_init, };