[PATCH] genirq / PM: Add flag for shared NO_SUSPEND interrupt lines

[Mark Rutland]

Hi Rafael,

I'm a little late to the party here, but I have just a couple of minor
comments...

[...]

> Link: http://marc.info/?l=linux-kernel&m=142252777602084&w=2
> Link: http://marc.info/?t=142252775300011&r=1&w=2
> Linx: https://lkml.org/lkml/2014/12/15/552

s/x/k/ ?

> Reported-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
> ---
>  include/linux/interrupt.h |    5 +++++
>  include/linux/irqdesc.h   |    1 +
>  kernel/irq/manage.c       |    7 ++++++-
>  kernel/irq/pm.c           |    7 ++++++-
>  4 files changed, 18 insertions(+), 2 deletions(-)
> 
> Index: linux-pm/include/linux/interrupt.h
> ===================================================================
> --- linux-pm.orig/include/linux/interrupt.h
> +++ linux-pm/include/linux/interrupt.h
> @@ -57,6 +57,10 @@
>   * IRQF_NO_THREAD - Interrupt cannot be threaded
>   * IRQF_EARLY_RESUME - Resume IRQ early during syscore instead of at device
>   *                resume time.
> + * IRQF_COND_SUSPEND - If the IRQ is shared with a NO_SUSPEND user, execute this
> + *                interrupt handler after suspending interrupts. For system
> + *                wakeup devices users need to implement wakeup detection in
> + *                their interrupt handlers.

It's probably worth documenting this in suspend-and-interrupts.txt, as
this invalidates some of the "IRQF_NO_SUSPEND and enable_irq_wake()"
section. I'll send a patch momentarily to that effect.

Otherwise, this patch looks good, thanks for handling this!

Acked-by: Mark Rutland <mark.rutland at arm.com>

Thanks,
Mark.