From nobody Mon Feb 9 07:22:38 2026 Delivered-To: importer@patchew.org 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; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1581541157013646.2336859411007; Wed, 12 Feb 2020 12:59:17 -0800 (PST) Received: from localhost ([::1]:43338 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1z6J-0000Bs-Qc for importer@patchew.org; Wed, 12 Feb 2020 15:59:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45691) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1z5F-0007ji-Jx for qemu-devel@nongnu.org; Wed, 12 Feb 2020 15:58:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j1z5E-0000aX-JB for qemu-devel@nongnu.org; Wed, 12 Feb 2020 15:58:09 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:35130 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j1z5E-0000aI-Ff for qemu-devel@nongnu.org; Wed, 12 Feb 2020 15:58:08 -0500 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-347-hrpHrTPwPy6ezjFRya2fQg-1; Wed, 12 Feb 2020 15:58:02 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 27BAC10766DE for ; Wed, 12 Feb 2020 20:58:01 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-117-39.ams2.redhat.com [10.36.117.39]) by smtp.corp.redhat.com (Postfix) with ESMTP id 33B91863CC; Wed, 12 Feb 2020 20:57:58 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 426F431E30; Wed, 12 Feb 2020 21:57:57 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581541088; 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=mnoiTOxvlWrl49cZaP7PlfgsIJrwXYmikRqXnqw6mZM=; b=LSrjBfnHcD3f60GoGKr8F6reKCjt/CwCpvTX9Hs4uO1vc9UqjFzpLYaWnToEz2MGB6FsXH 5/PSjlhOVHoqfLdLVZCQyloi76U5qALnnvLTQaciZBIB4rlybG2HkY2nKFF/kUL+OQTz7m AoGqB8PfXuvZA+3j0e0Vk7JPBVqjKQk= From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 2/2] uas: fix super speed bMaxPacketSize0 Date: Wed, 12 Feb 2020 21:57:57 +0100 Message-Id: <20200212205757.5608-3-kraxel@redhat.com> In-Reply-To: <20200212205757.5608-1-kraxel@redhat.com> References: <20200212205757.5608-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: hrpHrTPwPy6ezjFRya2fQg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" For usb2 bMaxPacketSize0 is "n", for usb3 it is "1 << n", so it must be 9 not 64 ... rom "Universal Serial Bus 3.1 Specification": If the device is operating at Gen X speed, the bMaxPacketSize0 field shall be set to 09H indicating a 512-byte maximum packet. An Enhanced SuperSpeed device shall not support any other maximum packet sizes for the default control pipe (endpoint 0) control endpoint. We now announce a 512-byte maximum packet. Fixes: 89a453d4a5c ("uas-uas: usb3 streams") Reported-by: Benjamin David Lunt Signed-off-by: Gerd Hoffmann Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-id: 20200117073716.31335-1-kraxel@redhat.com --- hw/usb/dev-uas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/usb/dev-uas.c b/hw/usb/dev-uas.c index 9825ec37d09c..11a8684cc2ab 100644 --- a/hw/usb/dev-uas.c +++ b/hw/usb/dev-uas.c @@ -303,7 +303,7 @@ static const USBDescDevice desc_device_high =3D { =20 static const USBDescDevice desc_device_super =3D { .bcdUSB =3D 0x0300, - .bMaxPacketSize0 =3D 64, + .bMaxPacketSize0 =3D 9, .bNumConfigurations =3D 1, .confs =3D (USBDescConfig[]) { { --=20 2.18.2