From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41261C433F5 for ; Thu, 30 Dec 2021 14:30:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240109AbhL3Oac (ORCPT ); Thu, 30 Dec 2021 09:30:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240081AbhL3Oac (ORCPT ); Thu, 30 Dec 2021 09:30:32 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 039CDC061574 for ; Thu, 30 Dec 2021 06:30:32 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9845A616F8 for ; Thu, 30 Dec 2021 14:30:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 0F084C36AEB for ; Thu, 30 Dec 2021 14:30:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1640874631; bh=cDm5GB99YYEMsQ1zW5Qr17XUOZvH/rf3OKH+6JNztEc=; h=From:To:Subject:Date:In-Reply-To:References:From; b=LJZLtRPVWuwnMqt+h26YSVv0x6jYhcvSq6/vwWD/kbGnexwNGZr2JbPRmm27W0NBQ 4A52yQB2wjpSgZm8O+jj/btoWSIY1i4GCdJeoIOr8roStVdAOb+1fJ4Og1gz9CERB/ 741lFoLzXAhBo4/tAdyPry+4Syk1MHowFAj4rweKr08U/cefzAlBEhD5m6ydJPqGwT h5rebRk2CB9arZ3bq3hBvzVTHb+54ZQXiIONieKdEiRMKZAGkYp3sKo+34NixyjhFJ vZSdTwq8lh07NmreL9XUIUJZA/aDPixKV6maM3SmKd26IxDSiQljPaCtkWPRTtr0n6 KGogeVgejdZPg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id E5DF6C05FCD; Thu, 30 Dec 2021 14:30:30 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 213839] XHCI 7 port usb hub does not work correctly Date: Thu, 30 Dec 2021 14:30:30 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: noodles@earth.li X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D213839 Jonathan McDowell (noodles@earth.li) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |noodles@earth.li --- Comment #5 from Jonathan McDowell (noodles@earth.li) --- I've just ended up with one of these devices and see the same behaviour; on Linux (5.10.70 from Debian) only 3 ports are operational, whereas when plug= ged into a Windows laptop all 7 ports work. It seems this is a knock-off hub - = it was sold as 480Mb/s capable, but is only reporting itself as full-speed (12Mb/s). As Tomas reports it shows up as 2 USB hubs - lsusb -vv output as follows: Bus 003 Device 080: ID 0a05:7211 Unknown Manufacturer hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0=20 bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 8 idVendor 0x0a05 Unknown Manufacturer idProduct 0x7211 hub bcdDevice 1.00 iManufacturer 0=20 iProduct 1 USB2.0 HUB iSerial 0=20 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0019 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0=20 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0=20 bInterfaceProtocol 0 Full speed (or root) hub iInterface 0=20 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0001 1x 1 bytes bInterval 255 Apparently the chip involved is a Micov MW7211 which is a single chip full-speed hub solution. I've no particular interest in seeing this work, g= iven that it's not high-speed capable, but figured the additional information mi= ght be helpful as there's obviously some difference in the way Windows is drivi= ng the hub compared to Linux. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=