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Tue, 19 May 2020 10:56:14 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-481-Kt08UygCOH2mVyO6m_iToA-1; Tue, 19 May 2020 10:56:02 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F1799100960F for ; Tue, 19 May 2020 14:56:01 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-32.ams2.redhat.com [10.36.112.32]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0476060BEC; Tue, 19 May 2020 14:55:58 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1EFBC11358D9; Tue, 19 May 2020 16:55:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1589900164; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DoKCgjkwQdyz3n/NTGq54J96p1D9/vv16smhJgTy9AE=; b=QX+8JkvdFP8yvMfs3ipRm8DiaTru2WFT2re4Yyk5gO8nuT1rMvZtlvqr85ht6Vg2B8VD+N h58TQn3zyNEZ07AFrjyxPdLrJLcru/W8wOER1u+GRMqIvW2EEeQyLwUi/RyPjU9/Dhcc2P wZFk7M6OQASJi7U0XdVtO0LMmx0Yx0c= X-MC-Unique: Kt08UygCOH2mVyO6m_iToA-1 From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH 28/55] usb: Eliminate usb_try_create_simple() Date: Tue, 19 May 2020 16:55:24 +0200 Message-Id: <20200519145551.22836-29-armbru@redhat.com> In-Reply-To: <20200519145551.22836-1-armbru@redhat.com> References: <20200519145551.22836-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/19 09:19:26 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pbonzini@redhat.com, berrange@redhat.com, ehabkost@redhat.com, Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" usb_try_create_simple() is qdev_try_new() and qdev_realize_and_unref() with more verbose error messages. Of its two users, one ignores errors, and the other asserts they are impossible. Make them use qdev_try_new() and qdev_realize_and_unref() directly, and eliminate usb_try_create_simple Cc: Gerd Hoffmann Signed-off-by: Markus Armbruster Reviewed-by: Gerd Hoffmann --- hw/usb/bus.c | 37 ++++++++++++++----------------------- 1 file changed, 14 insertions(+), 23 deletions(-) diff --git a/hw/usb/bus.c b/hw/usb/bus.c index 5c4d31614e..a81aee2051 100644 --- a/hw/usb/bus.c +++ b/hw/usb/bus.c @@ -318,35 +318,22 @@ USBDevice *usb_new(const char *name) return USB_DEVICE(qdev_new(name)); } =20 +static USBDevice *usb_try_new(const char *name) +{ + return USB_DEVICE(qdev_try_new(name)); +} + bool usb_realize_and_unref(USBDevice *dev, USBBus *bus, Error **errp) { return qdev_realize_and_unref(&dev->qdev, &bus->qbus, errp); } =20 -static USBDevice *usb_try_create_simple(USBBus *bus, const char *name, - Error **errp) -{ - Error *err =3D NULL; - DeviceState *dev; - - dev =3D qdev_try_new(name); - if (!dev) { - error_setg(errp, "Failed to create USB device '%s'", name); - return NULL; - } - qdev_realize_and_unref(dev, &bus->qbus, &err); - if (err) { - error_propagate_prepend(errp, err, - "Failed to initialize USB device '%s': ", - name); - return NULL; - } - return USB_DEVICE(dev); -} - USBDevice *usb_create_simple(USBBus *bus, const char *name) { - return usb_try_create_simple(bus, name, &error_abort); + USBDevice *dev =3D usb_new(name); + + usb_realize_and_unref(dev, bus, &error_abort); + return dev; } =20 static void usb_fill_port(USBPort *port, void *opaque, int index, @@ -426,6 +413,7 @@ void usb_claim_port(USBDevice *dev, Error **errp) { USBBus *bus =3D usb_bus_from_device(dev); USBPort *port; + USBDevice *hub; =20 assert(dev->port =3D=3D NULL); =20 @@ -443,7 +431,10 @@ void usb_claim_port(USBDevice *dev, Error **errp) } else { if (bus->nfree =3D=3D 1 && strcmp(object_get_typename(OBJECT(dev))= , "usb-hub") !=3D 0) { /* Create a new hub and chain it on */ - usb_try_create_simple(bus, "usb-hub", NULL); + hub =3D usb_try_new("usb-hub"); + if (hub) { + usb_realize_and_unref(hub, bus, NULL); + } } if (bus->nfree =3D=3D 0) { error_setg(errp, "tried to attach usb device %s to a bus " --=20 2.21.1