Messages in this thread | | | From | Marc Zyngier <> | Subject | Re: [PATCH] irqchip/apple-aic: fix irq_disable from within irq handlers | Date | Fri, 20 Aug 2021 13:22:18 +0100 |
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On Thu, 12 Aug 2021 12:09:42 +0200, Sven Peter wrote: > When disable_irq_nosync for an interrupt is called from within its > interrupt handler, this interrupt is only marked as disabled with the > intention to mask it when it triggers again. > The AIC hardware however automatically masks the interrupt when it is read. > aic_irq_eoi then unmasks it again if it's not disabled *and* not masked. > This results in a state mismatch between the hardware state and the > state kept in irq_data: The hardware interrupt is masked but > IRQD_IRQ_MASKED is not set. Any further calls to unmask_irq will directly > return and the interrupt can never be enabled again. > > [...]
Applied to irq/misc-5.15, thanks!
[1/1] irqchip/apple-aic: fix irq_disable from within irq handlers commit: 0fb038ba08dba0a5e937b79a67ed9c21ab5b59c5
Cheers,
M. -- Without deviation from the norm, progress is not possible.
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