From nobody Thu Nov 6 21:29:20 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1543301510528417.997055269424; Mon, 26 Nov 2018 22:51:50 -0800 (PST) Received: from localhost ([::1]:40296 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRXDn-00030o-UY for importer@patchew.org; Tue, 27 Nov 2018 01:51:48 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38459) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gRXBl-0001n6-SV for qemu-devel@nongnu.org; Tue, 27 Nov 2018 01:49:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gRXBj-0001NU-0A for qemu-devel@nongnu.org; Tue, 27 Nov 2018 01:49:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51062) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gRXBi-0001GJ-Oi for qemu-devel@nongnu.org; Tue, 27 Nov 2018 01:49:38 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E1BF63001932; Tue, 27 Nov 2018 06:49:36 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-59.ams2.redhat.com [10.36.116.59]) by smtp.corp.redhat.com (Postfix) with ESMTP id 99507608C3; Tue, 27 Nov 2018 06:49:36 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id EF3455E4E6; Tue, 27 Nov 2018 07:49:32 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Tue, 27 Nov 2018 07:49:31 +0100 Message-Id: <20181127064932.7299-6-kraxel@redhat.com> In-Reply-To: <20181127064932.7299-1-kraxel@redhat.com> References: <20181127064932.7299-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Tue, 27 Nov 2018 06:49:36 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 5/6] usb-host: set ifs.detached as true if kernel driver is not active 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: Paolo Bonzini , Gerd Hoffmann , linzhecheng , Markus Armbruster Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: linzhecheng If no kernel driver is active, we can already claim and perform I/O on it without detaching it. Signed-off-by: linzhecheng Message-id: 20181120083419.17716-1-linzhecheng@huawei.com Signed-off-by: Gerd Hoffmann --- hw/usb/host-libusb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c index f31e9cbbb8..b6602ded4e 100644 --- a/hw/usb/host-libusb.c +++ b/hw/usb/host-libusb.c @@ -1120,6 +1120,9 @@ static void usb_host_detach_kernel(USBHostDevice *s) rc =3D libusb_kernel_driver_active(s->dh, i); usb_host_libusb_error("libusb_kernel_driver_active", rc); if (rc !=3D 1) { + if (rc =3D=3D 0) { + s->ifs[i].detached =3D true; + } continue; } trace_usb_host_detach_kernel(s->bus_num, s->addr, i); --=20 2.9.3