pciehp: Mask hotplug interrupt at controller release
We must disable hotplug interrupt at controller relase time, otherwise spurious interrupts might happen if any slot events occured (e.g. MRL change) after unloading pciehp driver. Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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