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

[Andrew Lunn]

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?

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.

	Andrew