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Commit 20dbad75 authored by David Stevens's avatar David Stevens Committed by Greg Kroah-Hartman
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genirq/cpuhotplug: Skip suspended interrupts when restoring affinity



commit a60dd06a upstream.

irq_restore_affinity_of_irq() restarts managed interrupts unconditionally
when the first CPU in the affinity mask comes online. That's correct during
normal hotplug operations, but not when resuming from S3 because the
drivers are not resumed yet and interrupt delivery is not expected by them.

Skip the startup of suspended interrupts and let resume_device_irqs() deal
with restoring them. 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: default avatarDavid Stevens <stevensd@chromium.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240424090341.72236-1-stevensd@chromium.org


Cc: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a47b5484
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