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It is set once via > msi_domain_activate() and stays the same for the life time of the > interrupt. > > So the below prevents the invocation of irq_chip_write_msi_msg() in > msi_domain_set_affinity(), but I would recommend to investigate the > actual underlying problem nevertheless: > > It is going to roar its ugly head at some other place sooner than later > as there are tons of other places which guard against > pci_dev::current_state != PCI_D0. > > Thanks, > > tglx > --- > --- a/kernel/irq/chip.c > +++ b/kernel/irq/chip.c > @@ -1495,7 +1495,7 @@ int irq_chip_redirect_set_affinity(struc > WRITE_ONCE(redir->target_cpu, cpumask_first(dest)); > irq_data_update_effective_affinity(data, dest); > > - return IRQ_SET_MASK_OK; > + return IRQ_SET_MASK_OK_DONE; > } > EXPORT_SYMBOL_GPL(irq_chip_redirect_set_affinity); > #endif > Yes that does fix it! Tested-by: Jon Hunter Thanks! Jon -- nvpublic