Re: [Gumstix-users] Starting USB file storage gadget at boot time

[Alexandre P. N. <al...@om...>]

Steve Sakoman wrote:
> > I need to try the above with Mac OS and Linux, but the approach 
> seems to have promise.
>
> Hmmm . . . the behavior is different with Linux and Mac OS :-(
>
> Neither notices the "eject" of the media with the "clear_backing_file" 
> option.  In fact, the file storage gadget actually allows changes 
> after the eject on both OSes!
>
> I noticed that if I do a "cat 
> /sys/devices/platform/pxa2xx-udc/gadget/gadget-lun0/file" after the 
> "clear_backing_file" I still get /root/data/backing_file.  I would 
> have expected a null result.  This probably explains why Mac OS & 
> Linux are able to still access the backing store!
>
> Any idea what might be going on here?  Should I be doing something 
> different for the "clear_backing_store".
>
> Steve
That's sad... Does modprobe -r g_file_storage works at that point?

- Alexandre