This is the issue I have with recently acquired PL2303 adapter:
[ 70.502848] usb 1-2: new full-speed USB device number 5 using xhci_hcd
[ 70.652523] usb 1-2: New USB device found, idVendor=067b,
idProduct=23f3, bcdDevice= 6.05
[ 70.652533] usb 1-2: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 70.652538] usb 1-2: Product: USB-Serial Controller
[ 70.652540] usb 1-2: Manufacturer: Prolific Technology Inc.
[ 70.652543] usb 1-2: SerialNumber: CJAKj19B616
[ 70.674558] usbcore: registered new interface driver usbserial_generic
[ 70.674578] usbserial: USB Serial support registered for generic
[ 70.677490] usbcore: registered new interface driver pl2303
[ 70.677498] usbserial: USB Serial support registered for pl2303
[ 70.677510] pl2303 1-2:1.0: pl2303 converter detected
[ 70.677513] pl2303 1-2:1.0: unknown device type, please report to
linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Dawid Buchwald <buchwald.dawid@xxxxxxxxx>
---
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index a70fd86f735c..1072f8eb6ab9 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -435,6 +435,7 @@ static int pl2303_detect_type(struct usb_serial *serial)
case 0x105:
case 0x305:
case 0x405:
+ case 0x605:
/*
* Assume it's an HXN-type if the device doesn't
* support the old read request value.
