Commit 6f194c99 authored by Xu Qiang's avatar Xu Qiang Committed by Marc Zyngier
Browse files

irqdomain: Report irq number for NOMAP domains 



When using a NOMAP domain, __irq_resolve_mapping() doesn't store
the Linux IRQ number at the address optionally provided by the caller.
While this isn't a huge deal (the returned value is guaranteed
to the hwirq that was passed as a parameter), let's honour the letter
of the API by writing the expected value.

Fixes: d22558dd (“irqdomain: Introduce irq_resolve_mapping()”)
Signed-off-by: default avatarXu Qiang <xuqiang36@huawei.com>
[maz: commit message]
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220719063641.56541-2-xuqiang36@huawei.com
parent 29517170

kernel/irq/irqdomain.c

+2 −0
Original line number Diff line number Diff line
@@ -910,6 +910,8 @@ struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, 
			data = irq_domain_get_irq_data(domain, hwirq);

			if (data && data->hwirq == hwirq)

				desc = irq_data_to_desc(data);

			if (irq && desc)

				*irq = hwirq;

		}



		return desc;