On Tue, Nov 23, 2021 at 09:34:30AM +0100, Anton Lundin wrote: > On 23 November, 2021 - Johan Hovold wrote: > > > 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@xxxxxxxxxxxxxxx > > > > > 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)? > > Sorry nope. The device is potted with some kind of opaque plastic, so I > can see that there are two qfp's on the board, but not the numbers on > them. Ok, thanks for checking. Judging from the Prolific site the only G type device that comes in a QFP type package appears to be PL2303GC. > If there is some way of identifying the chip I can build a custom driver > that can read out any information if that helps. Thanks. Currently bcdDevice is the only known way to do this, but I may get back to you on this later. Let's assume it's a PL2303GC for now. Johan
