Huawei E3276 problem

[Bjørn Mork]

Olof Ermis <olof.ermis at gmail.com> writes:

> Hi!
>
> The patch worked, it didn't call the usb_driver_claim_interface.
>
> The echo gives:
>
> root at oloflinux:~/linux# echo '1-1:1.1' >/sys/bus/usb/drivers/cdc_ncm/unbind
> -bash: echo: write error: No such device

Yes, that was for Tommy. You will have to use your usb bus and port
numbers.  Doing e.g.

 ls -l /sys/bus/usb/drivers/cdc_ncm

will tell you which devices the driver is bound to.  You'll see one or
more symlinks like

 lrwxrwxrwx  1 root root    0 Nov 13 12:11 2-4:1.8 -> ../../../../devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4:1.8

So to unbind this USB interface from the driver, I would do

 echo '2-4:1.8' >/sys/bus/usb/drivers/cdc_ncm/unbind


BTW, after considering the plain symmetry of this, I decided that it is
best to add a test to unbind as well.  I'm attaching the (hopefully)
final version of the patch. Does it look OK to you?


Bjørn
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