On Sun, 2017-06-25 at 02:39:05 UTC, Scott Wood wrote:

External IRQ0 has the same capabilities as the other IRQ1-7 and is
handled by the same register IPIC_SEPNR.  When this register is not
specified for "ack" in "ipic_info", you cannot configure this IRQ as
IRQ_TYPE_EDGE_FALLING.  This oversight was probably due to the
non-contiguous hwirq numbering of IRQ0 in the IPIC.

Signed-off-by: Jurgen Schindele <redacted>
[scottwood: Cleaned up commit message and posted as a proper patch]
Signed-off-by: Scott Wood <oss@buserror.net>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/446183e4069e0b62cedfd72ccb90b8

cheers