Hi, On Sun, Sep 27, 2020 at 9:32 PM Maulik Shah <[email protected]> wrote: > > An interrupt that is disabled/masked but set for wakeup still needs to > be able to wake up the system from sleep states like "suspend to RAM". > > This change introduces IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag. If irqchip > have this flag set then irq PM will enable/unmask irqs that are marked > for wakeup but are in disabled state. > > On resume such irqs will be restored back to disabled state. > > Suggested-by: Thomas Gleixner <[email protected]> > Signed-off-by: Maulik Shah <[email protected]> > --- > include/linux/irq.h | 49 ++++++++++++++++++++++++++++++------------------- > kernel/irq/debugfs.c | 3 +++ > kernel/irq/pm.c | 34 ++++++++++++++++++++++++++++++---- > 3 files changed, 63 insertions(+), 23 deletions(-)
I will freely admit not being an expert on this code / knowing all the subtle edge conditions, but this seems reasonable to me. Reviewed-by: Douglas Anderson <[email protected]>
