Re: UPS USB serial device is not detected properly

[Greg KH <greg@kroah.com>]

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On Sat, Dec 27, 2008 at 01:14:56PM +0200, Hai Zaar wrote:
> On Sat, Dec 27, 2008 at 12:23 AM, Greg KH <greg@kroah.com> wrote:
> > On Fri, Dec 26, 2008 at 09:35:09PM +0200, Hai Zaar wrote:
> >> Good day! I have Advice Partner PR650 UPS, that connects to PC using USB.
> >> However, /dev/ttyUSB0 is not created. I've tried both on Debian Lenny
> >> and Ubuntu Hardy. Here is what dmesg and udevmonitor say (on Debian):
> >>
> >> dmesg:
> >> usb 2-3: new low speed USB device using ohci_hcd and address 10
> >> usb 2-3: configuration #1
> --
> Zaar
> 
> 
>  chosen from 1 choice
> >> hiddev96hidraw0: USB HID v1.00 Device [POWERCOM CO., LTD. USB to
> >> Serial] on usb-0000:00:0b.0-3
> >> usb 2-3: New USB device found, idVendor
9f, idProduct\002
> >> usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> >> usb 2-3: Product: USB to Serial
> >> usb 2-3: Manufacturer: POWERCOM CO., LTD.
> >> usbcore: registered new interface driver usbserial
> >> usbserial: USB Serial support registered for generic
> >> usbcore: registered new interface driver usbserial_generic
> >> usbserial: USB Serial Driver core
> >> usbserial: USB Serial support registered for DeLorme Earthmate USB
> >> usbserial: USB Serial support registered for HID->COM RS232 Adapter
> >> usbserial: USB Serial support registered for Nokia CA-42 V2 Adapter
> >> usbcore: registered new interface driver cypress
> >> cypress_m8: Cypress USB to Serial Driver v1.09
> >
> > This is the driver that should bind to this device, but for some reason
> > it isn't.  Is it also a HID device?  Can you provide the output of
> > /proc/bus/usb/devices with the device plugged in?
> Here it is:
> T:  Bus\x02 Lev\x01 Prnt\x01 Port\x02 Cnt\x01 Dev#= 10 Spd=1.5 MxCh= 0
> D:  Ver= 1.00 Cls\0(>ifc ) Sub\0 Prot\0 MxPS= 8 #Cfgs=  1
> P:  Vendor
9f ProdID\002 Rev= 0.00
> S:  Manufacturer=POWERCOM CO., LTD.
> S:  Product=USB to Serial
> C:* #Ifs= 1 Cfg#= 1 Atr€ MxPwr\x100mA
> I:* If#= 0 Alt= 0 #EPs= 2 Cls\x03(HID  ) Sub\0 Prot\0 Driver=usbhid
> E:  Ad(I) Atr\x03(Int.) MxPS=   8 Ivl\x10ms
> E:  Ad\x02(O) Atr\x03(Int.) MxPS=   8 Ivl\x10ms

Ah, the hid driver is binding to the device.  You need to add a quirk to
it to prevent this from happening, I don't know why no one has reported
this before.

If you need help generating such a patch, let us know.

thanks,

greg k-h