Markus Gothe nietzsche at lysator.liu.se
Tue Mar 1 11:15:32 UTC 2016

Ive added the NDP fixup to the driver to no avail. 

I'll do some USB-dumping on Windows. Good news is that it support the huawei embedded AT commands.


Den 1 mar 2016 11:57 skrev Bjørn Mork <bjorn at mork.no>:
> Markus Gothe <nietzsche at lysator.liu.se> writes: 
> > Bjørn, what's the status of this device? Did people get it working with NDP fixes??? 
> No, not as far as I know.  You have probably seen this thread, which is 
> without success so far: 
> http://www.draisberghof.de/usb_modeswitch/bb/viewtopic.php?f=4&t=2485 
> There are similar (or the same?) issues with the E3372: 
> https://bugs.freedesktop.org/show_bug.cgi?id=94340 
> I don't really know what is going on here.  Looks like "NDP to end" is 
> not the (only) problem.  The symptoms are similar to what we saw when I 
> messed up the setup sequence: The modem silently ignores our 
> SET_NTB_FORMAT reuquest and continues to operate in 32bit mode.  So I am 
> wondering if it might be a problem with our setup.  Maybe the modem 
> doesn't like being told to do 16bit mode while the buffers are > 2^16? 
> If you have the hardware and can reproduce the problem, then it might be 
> worth trying to move the initial buffer setup before the SET_NTB_FORMAT. 
> Maybe cdc_ncm_setup(dev) can be moved into cdc_ncm_init(dev)?  I don't 
> remember why I split it like that...  Might have been a good reason. 
> Or not. 
> Bjørn 

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