From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Date: Sat, 27 Dec 2008 17:53:39 +0000
Subject: Re: UPS USB serial device is not detected properly
Message-Id: <20081227175339.GA26904@kroah.com>
List-Id: <linux-hotplug.vger.kernel.org>
References: <cfb54190812261135p6ec0a750h2194c784a44424d2@mail.gmail.com>
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To: linux-hotplug@vger.kernel.org

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 U=
SB.
> >> 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
>=20
>=20
>  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=0002
> >> usb 2-3: New USB device strings: Mfr=3D1, Product=3D2, SerialNumber=3D0
> >> 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=02 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=3D 10 Spd=3D1.5 MxCh=3D 0
> D:  Ver=3D 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=3D 8 #Cfgs=3D  1
> P:  Vendor
9f ProdID=0002 Rev=3D 0.00
> S:  Manufacturer=3DPOWERCOM CO., LTD.
> S:  Product=3DUSB to Serial
> C:* #Ifs=3D 1 Cfg#=3D 1 Atr=80 MxPwr=100mA
> I:* If#=3D 0 Alt=3D 0 #EPs=3D 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=3Dusb=
hid
> E:  Ad=81(I) Atr=03(Int.) MxPS=3D   8 Ivl=10ms
> E:  Ad=02(O) Atr=03(Int.) MxPS=3D   8 Ivl=10ms

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