Hi,
since a few days I own a new usb device (a Motorola V3 mobile phone)
which seems to cause some troubles.
In short:
=========
The phone offers two usb configurations and in the second
configuration it offers three interfaces, BUT the interfaces are
numbered 5, 6 and 8 which leads to the following kernel messages:
usb 4-2: config 1 has an invalid interface number: 5 but max is 2
usb 4-2: config 1 has an invalid interface number: 6 but max is 2
usb 4-2: config 1 has an invalid interface number: 8 but max is 2
usb 4-2: config 1 has no interface number 0
usb 4-2: config 1 has no interface number 1
usb 4-2: config 1 has no interface number 2
(tested with brand new 2.6.14.2 kernel without any patches)
More details:
=============
The usb device offers 2 configurations ("bNumConfigurations" contains
the value 2) which corresponds to the two modes the phone supports:
Configuration 1 is AT mode, where the phone acts like an usb modem and
I can send AT commands using the device nodes created by the "cdc_acm"
module. In this mode it offers two interfaces with device classes 02
and 0a.
Configuration 2 corresponds to the proprietary P2K mode of Motorola. In
this configuration the phone offers 3 interfaces which all use
vendor-specific device classes and protocols as in all interfaces the
fields "bInterfaceClass" and "bInterfaceProtocol" contain the value
"ff".
Everything normal until here.
The weird thing is, that the 3 interfaces are not numbered 0, 1
and 2 but instead 5, 6 and 8! This leads to the pretty warning messages
above.
Also to mention (because I don't know if this is normal behaviour of an
usb device or not):
1.) When I plug in the phone and it's using configuration 1 (AT modem
mode) "bNumConfigurations" reports 2 available configurations, but
AFTER SWITCHING to configuration 2 it only reports one available
configuration (via "bNumConfigurations").
2.) Also the device id of the device changes from "22b8:4902" to
"22b8:4902" when I change to configuration 2.
But my main problem still is that there is no interface 0 in
configuration 2.
(Long version: I use VMware to use some motorola windows tools
which require configuration 2 - aka P2K mode - of the phone but VMware
claims that it cannot find interface 0 on the device.)
So I just wanted to ask, if it's legal for an usb device to have a
configuration where the interfaces are not numbered beginning from 0?
I don't have much knowledge on usb specifications and I didn't find
some info about this in the usb specifications (until now).
Hope you can help me with this issue.
Well, have a fine day!
johannes
--
Johannes Zweng [EMAIL PROTECTED]
Buergerspitalgasse 17-19/522 mobile: +43 699 11398186
A 1060 Vienna phone: +43 1 5979347 522
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