USB gadget - when to free request->buffer

[Brian Pin <brian_bin@xxxxxxxxxxx>]

Hello,

I explored gadget zero as an example, my focus is on struct usb_request and its
buffer. I saw it is allocated in the set_config function (inside set_alt), and
the "kfree(req->buf)" and "usb_ep_free_request(ep, req)" is only called in the
complete routine. I know when the device is disconnected these free routines
will be invoked, but how about changing configuration? the set_config(...)
routine in composite.c only disables the ep, but not free the requests and their
buffers. So that's my question, is this a possible memory leak? 

Thanks

Brian



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