Linux USB-to-serial driver ch341 not supported?

[G Miller]

Love the subsurface program.

I bought a Suunto Zoop cable from Amazon: "USB download DIY cable Suunto
Zoop Vyper Vytec Mosquito HelO2 works with Subsurface and Dive Log" 

at Amazon link

http://www.amazon.com/gp/product/B00SYZIJXI?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

Sold by a Bulgarian firm, at Amazon link

http://www.amazon.com/gp/aag/main/ref=olp_merch_name_1?ie=UTF8&asin=B00SYZIJXI&isAmazonFulfilled=0&seller=A2IZ2CWVOIWGRU

It works on Windows 7, but not on Linux mint 17.1. Linux loads the cable
driver as a ch341-uart:

Jul 10 11:06:02 ankh kernel: [90601.188079] usb 5-3: new full-speed USB
device number 4 using ohci-pci
Jul 10 11:06:02 ankh kernel: [90601.352734] usb 5-3: New USB device
found, idVendor=1a86, idProduct=7523
Jul 10 11:06:02 ankh kernel: [90601.352742] usb 5-3: New USB device
strings: Mfr=0, Product=2, SerialNumber=0
Jul 10 11:06:02 ankh kernel: [90601.352747] usb 5-3: Product:
USB2.0-Ser!
Jul 10 11:06:02 ankh mtp-probe: checking bus 5, device 4:
"/sys/devices/pci0000:00/0000:00:13.0/usb5/5-3"
Jul 10 11:06:02 ankh mtp-probe: bus: 5, device: 4 was not an MTP device
Jul 10 11:06:02 ankh kernel: [90601.414559] usbcore: registered new
interface driver usbserial
Jul 10 11:06:02 ankh kernel: [90601.414609] usbcore: registered new
interface driver usbserial_generic
Jul 10 11:06:02 ankh kernel: [90601.414644] usbserial: USB Serial
support registered for generic
Jul 10 11:06:02 ankh kernel: [90601.417837] usbcore: registered new
interface driver ch341
Jul 10 11:06:02 ankh kernel: [90601.417850] usbserial: USB Serial
support registered for ch341-uart
Jul 10 11:06:02 ankh kernel: [90601.417869] ch341 5-3:1.0: ch341-uart
converter detected
Jul 10 11:06:02 ankh kernel: [90601.440802] usb 5-3: ch341-uart
converter now attached to ttyUSB0

In Linux subsurface reports "error reading device"

Maybe the ch341 driver is at fault?

Thanks,
Greg