On Wed, Aug 14, 2024 at 11:28:25AM -0700, Bart Van Assche wrote:
From: David Stevens stevensd@chromium.org
commit a60dd06af674d3bb76b40da5d722e4a0ecefe650 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: David Stevens stevensd@chromium.org Signed-off-by: Thomas Gleixner tglx@linutronix.de Link: https://lore.kernel.org/r/20240424090341.72236-1-stevensd@chromium.org
kernel/irq/cpuhotplug.c | 11 ++++++++--- kernel/irq/manage.c | 12 ++++++++---- 2 files changed, 16 insertions(+), 7 deletions(-)
When forwarding patches on from others, you always have to sign off on them :(
thanks,
greg k-h