Unable to set "iInterface" in usb gadget via configfs

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I've been trying to report what I think is a bug, but I can't seem to
get through to the mailing list.  If these are coming through
duplicated, please let me know so I can quit sending them.

Thanks,
-a


> I've been trying to set "iInterface" in my usb gadget to a specific string, but I simply can't find a way to make configfs accept this.
> 
> When I set my gadget up on my Beaglebone Black (uname -a: Linux beaglebone 4.14.108-ti-r113 #1 SMP PREEMPT Wed Jul 31 00:01:10 UTC 2019 armv7l GNU/Linux).
> 
> I get (output from lsusb):
> 
> iInterface 5 HID Interface
> 
> 
> But I want it to be something like:
> 
> iInterface 4 LPC-LINK2 CMSIS-DAP V5.224
> 
> 
> This seems to be wired up as a fixed value in f_hid.c and doesn't seem to have a corresponding way to actually change it via configfs.
> 
> 
> #define CT_FUNC_HID_IDX 0
> 
> static struct usb_string ct_func_string_defs[] = {
>         [CT_FUNC_HID_IDX].s     = "HID Interface",
>         {},                     /* end of list */
> };
>  
> 
> Thanks,
> 
> -a
> 




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