[PATCH v3 0/19] irqdomain: fix mapping race and clean up locking

[Johan Hovold]

On Tue, Dec 20, 2022 at 11:30:42AM +0800, Mark-PK Tsai wrote:
> > Parallel probing (e.g. due to asynchronous probing) of devices that
> > share interrupts can currently result in two mappings for the same
> > hardware interrupt to be created.
> > 
> > This series fixes this mapping race and clean up the irqdomain locking
> > so that in the end the global irq_domain_mutex is only used for managing
> > the likewise global irq_domain_list, while domain operations (e.g.
> > IRQ allocations) use per-domain (hierarchy) locking.

> Tested-by: Mark-PK Tsai <mark-pk.tsai at mediatek.com>
> 
> We have the same issue and this patch series fix that.
> Thanks!
> 
> Link: https://lore.kernel.org/lkml/20221219130620.21092-1-mark-pk.tsai@mediatek.com/

Thanks for confirming. I just sent a v4 with a couple of clarifying
comments added to the final patch.

Johan