From patchwork Fri May 29 13:44:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 281644 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B047C433E0 for ; Fri, 29 May 2020 14:14:41 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 265E420707 for ; Fri, 29 May 2020 14:14:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Yvf9g4aA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 265E420707 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54358 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jefmS-0003Sh-BG for qemu-devel@archiver.kernel.org; Fri, 29 May 2020 10:14:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49310) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jefKb-0003Hu-5q for qemu-devel@nongnu.org; Fri, 29 May 2020 09:45:53 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:56287 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jefKN-00079S-LP for qemu-devel@nongnu.org; Fri, 29 May 2020 09:45:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1590759938; 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=P6ei+aO6naCGPkC88fAgnApcwVhA1I29cDgQ5A2CG1U=; b=Yvf9g4aAUMMRWJdbSGBm1VV9sIz64YNX060GZeHcJMlnEyyB91+ZQajDVNB8jPFMkRJ6e4 83Jk0y+3IstOSZi11VzxPg+RGG5pdzce9MwpcjbdJaycAiiWmxZXeKGBDFO4XiPRboJY76 kvGBOqYsRZWBe/FzIelE/Y0WZ5XG4bU= 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-124-lCds9nHpN5KiawtEELu-zQ-1; Fri, 29 May 2020 09:45:35 -0400 X-MC-Unique: lCds9nHpN5KiawtEELu-zQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3AC62107ACF8 for ; Fri, 29 May 2020 13:45:34 +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 7ADF72B6F7; Fri, 29 May 2020 13:45:31 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 3F0C01135221; Fri, 29 May 2020 15:45:24 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v2 29/58] usb: Eliminate usb_try_create_simple() Date: Fri, 29 May 2020 15:44:54 +0200 Message-Id: <20200529134523.8477-30-armbru@redhat.com> In-Reply-To: <20200529134523.8477-1-armbru@redhat.com> References: <20200529134523.8477-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/28 23:43:13 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_H4=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: Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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)); } +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); } -static USBDevice *usb_try_create_simple(USBBus *bus, const char *name, - Error **errp) -{ - Error *err = NULL; - DeviceState *dev; - - dev = 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 = usb_new(name); + + usb_realize_and_unref(dev, bus, &error_abort); + return dev; } 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 = usb_bus_from_device(dev); USBPort *port; + USBDevice *hub; assert(dev->port == NULL); @@ -443,7 +431,10 @@ void usb_claim_port(USBDevice *dev, Error **errp) } else { if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) { /* Create a new hub and chain it on */ - usb_try_create_simple(bus, "usb-hub", NULL); + hub = usb_try_new("usb-hub"); + if (hub) { + usb_realize_and_unref(hub, bus, NULL); + } } if (bus->nfree == 0) { error_setg(errp, "tried to attach usb device %s to a bus "