pl2303 : unknown device type

[Chris <chris@xxxxxxxxxxxxxxx>]

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 
archlinux. The device is an "ICP-DAS I-7561"

dmesg -w 

[ 1999.689678] usb 2-4: new full-speed USB device number 3 using ohci-pci
[ 1999.919763] usb 2-4: New USB device found, idVendor=067b, idProduct=2303, bcdDevice=5d.ca
[ 1999.919772] usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1999.919775] usb 2-4: Product: USB-Serial Controller
[ 1999.919777] usb 2-4: Manufacturer: Prolific Technology Inc.
[ 1999.923348] pl2303 2-4:1.0: pl2303 converter detected
[ 1999.923365] pl2303 2-4:1.0: unknown device type, please report to linux-usb@xxxxxxxxxxxxxxx 

lsusb -v

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

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
  iManufacturer           1 Prolific Technology Inc.
  iProduct                2 USB-Serial Controller
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0027
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x000a  1x 10 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0

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