Greg KH <greg@xxxxxxxxx> writes:
> On Sat, Dec 03, 2011 at 05:41:56PM +0100, Bjørn Mork wrote:
>>
>>
>> > + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E353, 0xff, 0x01, 0x08) },
>>
>> No, please do not grab these interfaces.
>
> Please send a patch reverting this line then.
>
>> This is not a serial protocol, but an improperly labelled CDC Data
>> protocol. It should be left unhandled until we are able to figure out
>> how to use it properly. That is doable. It is very close to standard
>> CDC ECM (together with the matching control interface labelled 0xff,
>> 0x01, 0x09), and can be handled by either a slighly modified cdc_ether
>> or a derived driver.
>
> Or wait until you have a patch that can handle these interfaces, either
> is fine.
OK. Makes sense. Although I'm starting to believe that the device I've
got is just very buggy. Probably an early firmware version. I can't get
anywhere wrt my main problem: No frames received at all unless I'm on an
LTE network. And even when I get the frames, they lack an ethernet
header most of the time. But not always. And I cannot find a pattern.
The missing ethernet header is of course fixable since this is a PtP
link anyway, but I have a nagging feeling that it's just a bug hitting
me and not many others. So there's really no point.
What I have found, is that the device implements CDC ECM (except for the
bug described above), and also supports the QMI protocol via CDC
encapsulated command/response like the Qualcomm Gobi devices. SO you
can actually control the device without using any of the serial ports if
you like.
If anyone else wants to give it a shot...
> And ick, gmane.org addresses? Please use the "real" ones otherwise
> stuff gets dropped on the floor.
Sorry. I try my best to keep the load on list servers low by reading as
much as possible via nntp from gmane.org. But for some reason this list
has the anonymizer feature on, which makes mail replies fail like that.
Won't happen again.
Bjørn
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