Felipe:
A UDC driver will invoke the gadget driver's ->disconnect callback
whenever the D+ pullup is turned off. During gadget driver unbinding,
this happens automatically when usb_gadget_remove_driver() calls
usb_gadget_disconnect().
But immediately thereafter, usb_gadget_remove_driver() calls the gadget
driver's ->disconnect callback directly! Do we have any reason for
doing this? I don't see point to it. Should that call be removed?
Of possible relevance: commit 0abd06969825 ("usb: gadget: udc-core:
call ->disconnect() when soft disconnecting").
Alan Stern
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