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Date:   Tue, 23 Nov 2021 09:13:02 +0100
From:   Johan Hovold <johan@kernel.org>
To:     Anton Lundin <glance@acc.umu.se>
Cc:     linux-usb@vger.kernel.org
Subject: Re: pl2303 converter detected, unknown device type
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On Tue, Nov 23, 2021 at 08:16:13AM +0100, Anton Lundin wrote:
> I just picked up a new usb-rs232 adapter and was met by the following on
> a modern kernel:
> 
> # uname -r
> 5.16.0-rc2
> 
> usb 3-7: new full-speed USB device number 5 using xhci_hcd
> usb 3-7: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
> usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 3-7: Product: ATEN USB to Serial Bridge
> usb 3-7: Manufacturer: Prolific Technology Inc.
> pl2303 3-7:1.0: pl2303 converter detected
> pl2303 3-7:1.0: unknown device type, please report to linux-usb@vger.kernel.org

> I'm guessing it just needs a case for this bcdDevice.

Indeed, and thanks for reporting this. I'll add the missing entry.

Do you know what kind of PL2303 this is (e.g. PL2303GC)?

Johan