Messages in this thread Patch in this message | | | From | David Stevens <> | Subject | [PATCH] genirq: Disable suspended irqs when restoring affinity | Date | Thu, 18 Apr 2024 16:46:52 +0900 |
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In irq_restore_affinity_of_irq(), after initializing an affinity managed irq, disable the irq if it should be suspended. This ensures that irqs are not delivered to drivers during the noirq phase of resuming from S3, after non-boot CPUs are brought back online.
Signed-off-by: David Stevens <stevensd@chromium.org> --- kernel/irq/cpuhotplug.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/irq/cpuhotplug.c b/kernel/irq/cpuhotplug.c index 1ed2b1739363..c00132013708 100644 --- a/kernel/irq/cpuhotplug.c +++ b/kernel/irq/cpuhotplug.c @@ -197,6 +197,8 @@ static void irq_restore_affinity_of_irq(struct irq_desc *desc, unsigned int cpu) if (irqd_is_managed_and_shutdown(data)) { irq_startup(desc, IRQ_RESEND, IRQ_START_COND); + if (desc->istate & IRQS_SUSPENDED) + __disable_irq(desc); return; } base-commit: e8f897f4afef0031fe618a8e94127a0934896aba -- 2.44.0.683.g7961c838ac-goog
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