usbgadget: do not register when no functions present
registering a multifunction device makes only sense when there's
at least one function configured. Just return otherwise.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent bf03086 commit bc7e00c45bf479258f033a454e3c538d164c4ea5
@Sascha Hauer Sascha Hauer authored on 27 Sep 2017
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drivers/usb/gadget/autostart.c