On Tue, Jul 27, 2021 at 05:00:20PM -0700, Vasily Khoruzhick wrote:
> Hey,
>
> My PL2303 adapter isn't working after I upgraded to 5.13.
>
> Looks like the culprit is commit 8a7bf7510d1f ("USB: serial: pl2303:
> amend and tighten type detection").
>
> It used to work fine in 5.12.x.
>
> Now it fails like this:
>
> [246872.298632] usb 1-1: new full-speed USB device number 14 using xhci_hcd
> [246872.440065] usb 1-1: New USB device found, idVendor=067b,
> idProduct=23c3, bcdDevice= 3.05
> [246872.440079] usb 1-1: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [246872.440085] usb 1-1: Product: USB-Serial Controller
> [246872.440089] usb 1-1: Manufacturer: Prolific Technology Inc.
> [246872.440093] usb 1-1: SerialNumber: CMA>b103Y23
> [246872.445098] pl2303 1-1:1.0: pl2303 converter detected
> [246872.445114] pl2303 1-1:1.0: unknown device type, please report to
> linux-usb@xxxxxxxxxxxxxxx
Thanks for the report. Can you please post the output of lsusb -v for
this device?
> Any ideas on how to fix it properly? Should I send a patch that
> handles bcdDevice == 0x305 and returns TYPE_HX for it from
> pl2303_detect_type()?
The device id indicates that this is in fact a PL2303GT so we may need
to amend the HXN type detection.
Johan
