Re: cdc-acm with incorrect bInterfaceSubClass

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On Mon, Oct 27, 2014 at 04:38:48PM +0100, Johan Hovold wrote:
> On Mon, Oct 27, 2014 at 02:52:59PM +0000, Karl Palsson wrote:
> > Hi,
> > 
> > I've got a GW Instek function generator (AFG-2225) that _appears_ like
> > it should be a
> > CDC-ACM device, but it seems to have a bug in it's descriptor.  The
> > same bug as Steven
> > Ackerman had in this thread:
> > http://comments.gmane.org/gmane.linux.usb.general/71225
> > (lsusb -v output at the bottom of this mail)
> 
> > Is there anything I can do to get this to turn up as an ACM device in linux?
> 
> What happens if you add the device id through sysfs?
> 
> 	echo 2184 001c >/sys/bus/usb/drivers/cdc_acm/new_id
> 

That works fine, shows up perfectly as /dev/ttyACMx and
/dev/serial/by-id/usb-GW_IISTEK_AFG-2225_GEN850317-if00 and I use picocom
to talk to it as expected.

Sincerely,
Karl Palsson
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