Re: cdc_acm: Zero length descriptor references with Motorola H24

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Am Mittwoch, 9. Mai 2012, 09:14:15 schrieb Alexander Stein:
> Am Mittwoch, 9. Mai 2012, 09:00:16 schrieb Oliver Neukum:
> > Am Mittwoch, 9. Mai 2012, 08:54:28 schrieb Alexander Stein:
> > > After that I get a ttyACM for the modem interface and there is no more
> > > error message. But I still need the usbserial driver for the control
> > > interface. I'm not exactly sure if that is what you intended. At least
> > > the error message is gone.
> > 
> > Hm, the question is which driver is bound to which interface.
> > In most distros "lsusb -t" will tell you
> 
> This is the part for the H24 modem:
> /:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/1p, 12M
>     |__ Port 1: Dev 3, If 0, Class=comm., Driver=cdc_acm, 12M
>     |__ Port 1: Dev 3, If 1, Class=data, Driver=cdc_acm, 12M
>     |__ Port 1: Dev 3, If 2, Class=vend., Driver=usbserial_generic, 12M
> 
> Note I called "modprobe usbserial vendor=0x22b8 product=0x2d93" and "modprobe 
> cdc_acm" before.

Then it is correct. If 2 simply is not cdc. However you could write a stub driver
for If 2 based on moto_modem.c

	Regards
		Oliver
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