[Spice-devel] Usb redirection

[Jackson]

> > And I print the data in usbredir_write_callback() & 
usbredir_free_write_cb_data()
> > ...
> > write_data = 100
> > free_data = 100
> > write_data = 17
> > write_data = 17
> > write_data = 4
> > write_data = 5
> > write_data = 11
> > free_data = 17
> > free_data = 238(error)
> >

> What are these numbers you are printing? It would probably be more useful
> to print the data buffer pointer instead using %p.
> 

write_data indicates that the parameter uint8_t *data are sent into int 
usbredir_write_callback(void *user_data, uint8_t *data, int count).

And free_data indicates the parameter uint8_t *data are sent into void 
usbredir_free_write_cb_data(uint8_t *data, void *user_data). 

The address corresponds to the above data:
...
write_data = 06CA67A0
free_data = 06CA67A0
write_data = 06DD23C8
write_data = 06DD23C8
write_data = 06E137C8
write_data = 06E138E8
write_data = 06DD28C8
free_data = 06DD23C8
free_data = 06DD23C8(error)