Hi Greg,
commit 9d0273bb1c4b64 ("genirq: Use irqd_get_trigger_type to compare the trigger
type for shared IRQs") causes a regression in v4.4.124. The problem has been fixed
upstream with commit 4f8413a3a799 ("genirq: Track whether the trigger type has
been set"). Please apply that patch to v4.4.y at your earliest convenience.
The patch does not apply cleanly; you'll get a conflict include/linux/irq.h.
The fix is simple - just take the version introduced by the patch. It adds
a couple of extra defines, but those don't hurt and just keep the code aligned
with upstream.
Thanks,
Guenter