From: jgunthorpe@obsidianresearch.com (Jason Gunthorpe)
Date: Mon, 3 Mar 2014 11:01:43 -0700
Subject: [PATCH 0/7] PCI irq mapping fixes and cleanups
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On Mon, Mar 03, 2014 at 09:49:52AM -0800, Tim Harvey wrote:

> I'm not clear why irq 20 is getting returned for all the slots with
> (slot%4)=0 and func=0.  If I start debugging of_irq_parse_pci() I see
> that it walks up the tree until it gets to the pcie host controller
> then calls of_irq_parse_raw() which is returning irq20 or -EINVAL.

Can you share your DT as well?

Jason