From: David Miller <davem@davemloft.net> Date: 2018-01-16 20:18:35
From: Andrew Lunn <andrew@lunn.ch>
Date: Mon, 15 Jan 2018 23:45:56 +0100
Further testing and core review found two sets of bugs.
Core review found a cut/paste error in the irq setup code.
A board which does not have an interrupt line from the switch to the
SoC, and experiancing an EPROBE_DEFER throw a splat when the ATU irq
was freed but never registered.