From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B392304BA8 for ; Wed, 27 Aug 2025 08:25:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756283150; cv=none; b=nMwMOTtTCrMUKJLLi+9sLm9SE1/n15uKCuCz0OUw1/4twh81RdPIM20V5LYLPsTWpDxnlpkRJxnfcS+ZNEYC1Pca6eVsHXCofhIcDR4dHqHY+F5DVbqbXD/NsZkCmfbcgYmZ8aCPx2t7xsn2qyCxxWjApp/7RUcmH6FMlI+JAp4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756283150; c=relaxed/simple; bh=AG2MX81BrDv6NptTkiXXM/C8VbaHY8mmTbbQmdmiCSQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Alu7R/gAJFxGf4xFtobeZRvHqQ3772R6yr9T+Tt5MVVPpa1RExXE+zIoO8NeySWzkNa49agnnNoFBlEjUJWgBXmiVEG+U/sxrPkaLMUVyULW8DMz5UeQr8WWNEdWsoF1R+a1zIbjeDGc71xptH5j1uEBw5PBCjB1Nz/N84fh+Us= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Mra659Ip; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Mra659Ip" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC38EC113D0; Wed, 27 Aug 2025 08:25:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756283149; bh=AG2MX81BrDv6NptTkiXXM/C8VbaHY8mmTbbQmdmiCSQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Mra659Ip1VE2Dy9aMfbqeaAdbmzdkP0baGVvsONVhIg/u9I2i5Kw2CZyW0G6NRnmM Z/hidnGwptUxws5feQJfMVDXxBCr6y1Sm3akJorA3jdY/71vgVv7tw6wm/oXCEPcG1 jtfGtp4Wx9fWDk30o1WTvO3OHp++wzTkfQ+rhxN5BEHzyV/YY4H+XVMty0mK4w6qhU GgiXAs8N36btvpNPthlqTObHRcvfWXNPC0Ddt5fb5PL1RezniMMlZnK0ouyjTNtlGc fn5eg/EUfbsKQJpi7G2dlFphZz55VWOhWnJTRMWtIuxSF7T2ymZQDfenXMPhCL5zjJ Qh0qGT8hqQfqg== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1urBTM-000000000zA-1uGi; Wed, 27 Aug 2025 10:25:37 +0200 Date: Wed, 27 Aug 2025 10:25:36 +0200 From: Johan Hovold To: Ulrich Stoehlker Cc: linux-usb@vger.kernel.org Subject: Re: pl2303 converter - unknown device type Message-ID: References: <585146173.2802367.1754377623142.ref@mail.yahoo.com> <585146173.2802367.1754377623142@mail.yahoo.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <585146173.2802367.1754377623142@mail.yahoo.com> On Tue, Aug 05, 2025 at 07:07:03AM +0000, Ulrich Stoehlker wrote: > I have a Multi-Channel-Analyzer (MCA) interfaced via usb. > This device cannot be used on more recent kernels. > I get the following error message: > > [663822.490455] usb 1-3: new high-speed USB device number 17 using xhci_hcd > [663822.616495] usb 1-3: New USB device found, idVendor=0557, idProduct=2008, bcdDevice= 0.01 > [663822.616501] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0 > [663822.682309] usbcore: registered new interface driver usbserial_generic > [663822.682326] usbserial: USB Serial support registered for generic > [663822.686383] usbcore: registered new interface driver pl2303 > [663822.686402] usbserial: USB Serial support registered for pl2303 > [663822.686423] pl2303 1-3:1.0: pl2303 converter detected > [663822.686431] pl2303 1-3:1.0: unknown device type, please report to linux-usb@vger.kernel.org > > Linux host1 6.8.0-64-generic #67~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Jun 24 15:19:46 UTC 2 x86_64 x86_64 x86_64 GNU/Linux > > But it works with older kernels: > Linux host2 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l GNU/Linux > > Would it be possible to correct this problem!? That should be doable. Could you please post the output of "lsusb -v" for this device? Johan