Re: [Ftdi-usb-sio-devel] usb_detatch_kernel_driver

[Bill R. <bil...@gm...>]

Probably the easiest and safest thing to do is to completely remove the
ftdi_sio module.

Otherwise you can setup rmmod in you /etc/sudoers file.




On Tue, Nov 3, 2009 at 2:55 AM, T. Horsnell <ts...@mr...> wrote:

> Hi,
> I've just started with libftdi, and am getting an error during
> ftdi_open_usb_dev when it tries to detatch any existing ftdi_sio module,
> when running as a non-root user.
>
> Everything works OK when I run as root.
>
> Presuming that a user-mode prog wasnt able to do the
> usb_detach_kernel_driver_np,
> I did 'rmmod ftdi_sio', and commented out the 'usb_detach_kernel_driver_np'
> line in
> the library, but I now get a -3 error at the 'usb_set_configuration' step,
> unless
> I run as root.
>
> What permissions do I need to set on what files to be able to do things
> as a non-root user?
>
> Many thanks,
> Terry
>
>
>
>
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