Merge branch 'usb-callbacks'

Sebastian Andrzej Siewior says:

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net/usb: Use irqsave in USB's complete callback

This is about using _irqsave() primitives in the completion callback in
order to get rid of local_irq_save() in __usb_hcd_giveback_urb().
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Signed-off-by: David S. Miller <davem@davemloft.net>