From: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
To: Linus Torvalds
<torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
linuxppc-dev
<linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>,
Tanmay Inamdar <tinamdar-qTEPVZfXA3Y@public.gmane.org>,
Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>
Subject: Please revert commit dc9372808412edbc653a675a526c2ee6c0c14a91
Date: Wed, 23 Nov 2011 09:11:50 +1100 [thread overview]
Message-ID: <1321999910.14573.11.camel@pasglop> (raw)
Hi Linus !
Please, revert commit dc9372808412edbc653a675a526c2ee6c0c14a91
"of/irq: of_irq_find_parent: check for parent equal to child"
This breaks some powerpc platforms at least. The practice of having a
node provide an explicit "interrupt-parent" property pointing to itself
is an old trick that we've used in the past to allow a device-node to
have interrupts routed to different controllers.
In that case, the node also contains an interrupt-map, so the node is
its own parent, the interrupt resolution hits the map, which then can
route each individual interrupt to a different parent.
Cheers,
Ben.
next reply other threads:[~2011-11-22 22:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-22 22:11 Benjamin Herrenschmidt [this message]
2011-11-22 22:43 ` Please revert commit dc9372808412edbc653a675a526c2ee6c0c14a91 Grant Likely
[not found] ` <CACxGe6tydq8yGnEMea-cL2Et_vWEBrmpE_Xn9U-rb1nZskxztQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-11-22 23:36 ` Rob Herring
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