From patchwork Mon Sep 5 18:13:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 9314995 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 86438600CA for ; Mon, 5 Sep 2016 18:23:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7A42328A29 for ; Mon, 5 Sep 2016 18:23:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6D17928B04; Mon, 5 Sep 2016 18:23:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 213C028A29 for ; Mon, 5 Sep 2016 18:23:51 +0000 (UTC) Received: from localhost ([::1]:56167 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgyYg-0001wN-68 for patchwork-qemu-devel@patchwork.kernel.org; Mon, 05 Sep 2016 14:23:50 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37860) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgyPQ-0002cR-DN for qemu-devel@nongnu.org; Mon, 05 Sep 2016 14:14:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bgyPO-0000np-Dh for qemu-devel@nongnu.org; Mon, 05 Sep 2016 14:14:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50424) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgyP9-0000hH-56; Mon, 05 Sep 2016 14:13:59 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CED063B716; Mon, 5 Sep 2016 18:13:58 +0000 (UTC) Received: from noname.redhat.com (ovpn-116-62.ams2.redhat.com [10.36.116.62]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u85IDt7P020627; Mon, 5 Sep 2016 14:13:57 -0400 From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 5 Sep 2016 20:13:13 +0200 Message-Id: <1473099234-10882-2-git-send-email-kwolf@redhat.com> In-Reply-To: <1473099234-10882-1-git-send-email-kwolf@redhat.com> References: <1473099234-10882-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Mon, 05 Sep 2016 18:13:58 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 01/42] ide: ide-cd without drive property for empty drive 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: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This allows the creation of an empty ide-cd device without manually creating a BlockBackend. Signed-off-by: Kevin Wolf Acked-by: Eric Blake --- hw/ide/qdev.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c index 67c76bf..2eb055a 100644 --- a/hw/ide/qdev.c +++ b/hw/ide/qdev.c @@ -75,10 +75,6 @@ static int ide_qdev_init(DeviceState *qdev) IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev); IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus); - if (!dev->conf.blk) { - error_report("No drive specified"); - goto err; - } if (dev->unit == -1) { dev->unit = bus->master ? 1 : 0; } @@ -158,6 +154,16 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind) IDEState *s = bus->ifs + dev->unit; Error *err = NULL; + if (!dev->conf.blk) { + if (kind != IDE_CD) { + error_report("No drive specified"); + return -1; + } else { + /* Anonymous BlockBackend for an empty drive */ + dev->conf.blk = blk_new(); + } + } + if (dev->conf.discard_granularity == -1) { dev->conf.discard_granularity = 512; } else if (dev->conf.discard_granularity && @@ -257,7 +263,11 @@ static int ide_cd_initfn(IDEDevice *dev) static int ide_drive_initfn(IDEDevice *dev) { - DriveInfo *dinfo = blk_legacy_dinfo(dev->conf.blk); + DriveInfo *dinfo = NULL; + + if (dev->conf.blk) { + dinfo = blk_legacy_dinfo(dev->conf.blk); + } return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD); }