[PATCH 1/4] irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1

[Marek Behún]

On Wed, 19 Jun 2024 19:08:04 +0200
Andrew Lunn <andrew at lunn.ch> wrote:

> On Wed, Jun 19, 2024 at 04:11:31PM +0200, Marek Behún wrote:
> > From: Pali Rohár <pali at kernel.org>
> > 
> > IRQs 0 (IPI) and 1 (MSI) are handled internally by this driver,
> > generic_handle_domain_irq() is never called for these IRQs.
> > 
> > Disallow mapping these IRQs.
> > 
> > Fixes: 344e873e5657 ("arm: mvebu: Add IPI support via doorbells")
> > Fixes: 31f614edb726 ("irqchip: armada-370-xp: implement MSI support")
> > Signed-off-by: Pali Rohár <pali at kernel.org>
> > [ changed commit message, added Fixes tags ]
> > Signed-off-by: Marek Behún <kabel at kernel.org>  
> 
> Is this needed in stable? Is the problem being fixed a real bug that
> bothers people?

Not as far as I know, but I have been asked to add Fixes tag for less.

> https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> 
> If you would like this back ported in stable, please post it as a
> separate patch. Otherwise it can be kept as part of the series.  The
> Fixes: might result in it being backported anyway.

I don't need it backported. Semantically it is a fix, but it doesn't
bother anyone.

I will post v2 without the Fixes tags.

Marek