Re: [PATCH 3.16.y-ckt 053/133] ARM: orion5x: fix legacy orion5x IRQ numbers

From: Benjamin Cama
Date: Thu Oct 15 2015 - 05:08:40 EST


Hi everyone,

Le 2015-10-15 08:22, Gregory CLEMENT a ÃcritÂ:
On jeu., oct. 15 2015, Ben Hutchings <ben@xxxxxxxxxxxxxxx> wrote:

On Wed, 2015-09-30 at 10:50 +0100, Luis Henriques wrote:
3.16.7-ckt18 -stable review patch.ÂÂIf anyone has any objections, please let me know.

------------------

From: Benjamin Cama <benoar@xxxxxxxx>

commit 5be9fc23cdb42e1d383ecc8eae8a8ff70a752708 upstream.

Since v3.18, attempts to deliver IRQ0 are rejected, breaking orion5x.
[...]

But I don't think this was needed for 3.16-ckt, was it?

Indeed it fixes a commit (a71b092a9c68 ("ARM: Convert handle_IRQ to use
__handle_domain_irq")) that was introduced in 3.18:

git tag --contains a71b092a9c68 | grep "^v3\." | sort | head -1
v3.18

So please Luis do not apply it on 3.16-ckt unless you already back port
the commit a71b092a9c68 ("ARM: Convert handle_IRQ to use
__handle_domain_irq") on this branch.

Indeed it is not completely needed, but to be clear it "just" shifts the IRQs by one, so it shouldn't do any harm either. So it is up to you. I would understand that you choose not to apply it to be on the safe side. BTW, it seems f28d7de is required by my patch, appearing in 3.14; as I don't follow kernel development closely, I could not assure you my patch is completly safe for 3.16.

Regards,
--
benjamin
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