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 X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 56CDBC432BE for ; Thu, 29 Jul 2021 10:11:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3196F61054 for ; Thu, 29 Jul 2021 10:11:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235269AbhG2KL0 (ORCPT ); Thu, 29 Jul 2021 06:11:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:55488 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231488AbhG2KLZ (ORCPT ); Thu, 29 Jul 2021 06:11:25 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id EBB7961040; Thu, 29 Jul 2021 10:11:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627553483; bh=Yhp3wol49d5RYKKEfTjVOP0LZ9awPGs1SEUvAJnqAXU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=UUAC00L+tE6WuE7nDWlv0DTDwzPDWPpz2PQueeI5j/4sorY+95Xk+m+Cw4GFobnpL 1ml7uRB+vLa0kOdtv1eA2kd6iI51zINVw9LJzbeq5TW3ghX5VVkaG1mXgIWfOvCJsN H/Tw9cj6Jal1vPKf+keR2gHbJBwBynIIlHOUtViQmkB0/29i5f28Pm7u10UjO8pMGf H1eYKV9q19n19TRXKQu0CnX0WT8/IVm0+gVH172XFhNxYKa0P0JnzgRzTx4aIwa9jP VEtlZTlzcVFvmZi4MHB7zA6m2HrW/QgielQgxODTGILbkWbX42BB3rGU+pirCV+rKr nUDFoH2TP0u+Q== Received: from johan by xi with local (Exim 4.94.2) (envelope-from ) id 1m9300-0002O2-Ld; Thu, 29 Jul 2021 12:10:44 +0200 Date: Thu, 29 Jul 2021 12:10:44 +0200 From: Johan Hovold To: Chris Cc: linux-usb@vger.kernel.org Subject: Re: pl2303 : unknown device type Message-ID: References: <2560053.x2KRyp2eMa@cyber-bucket> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="6lIz+6uUQ3bMUuXQ" Content-Disposition: inline In-Reply-To: <2560053.x2KRyp2eMa@cyber-bucket> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org --6lIz+6uUQ3bMUuXQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 27, 2021 at 02:37:23PM +0200, Chris wrote: > This problem was introduced with 5.13 and still persists in 5.13.5 > After downgrading to 5.12.x, everything works like expected. Tested on=20 > archlinux. The device is an "ICP-DAS I-7561" Thanks for reporting this. > lsusb -v >=20 > Bus 002 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial = Port / Mobile Action MA-8910P > Couldn't open device, some information will be missing >=20 > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 0 > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x067b Prolific Technology, Inc. > idProduct 0x2303 PL2303 Serial Port / Mobile Action MA-8910P > bcdDevice 5d.ca This is an unexpected device version (93.202) which may need to add a special case for. The descriptors look just fine otherwise and matches for example an HXD device I have here (with bcdDevice 4.00) but I guess it could also be an HX or earlier. Do you have any idea what kind of chip this is?=20 Johan --6lIz+6uUQ3bMUuXQ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQHbPq+cpGvN/peuzMLxc3C7H1lCAUCYQJ+oAAKCRALxc3C7H1l CHX+AQDhhWXMPnf22j53jdF6bjBh/K6m8GRx0WOzR9NES4rWNQD/QQE/Pt3K6REb +id5rlAJtPbV0Bx1+LJOjcxTSRR0igY= =JYXz -----END PGP SIGNATURE----- --6lIz+6uUQ3bMUuXQ--