genirq: Add state field to irq_data

Some chip implementations need to access certain status flags. With
sparse irqs that requires a lookup of the irq descriptor. Add a state
field which contains such flags.

Name it in a way which will make coders happy to access it with the
proper accessor functions. And it's easy to grep for.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 782bf9851a9f..581d9665fd38 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -48,6 +48,7 @@ struct irq_desc {
                 struct {
                         unsigned int            irq;
                         unsigned int            node;
+                        unsigned int            pad_do_not_even_think_about_it;
                         struct irq_chip         *chip;
                         void                    *handler_data;
                         void                    *chip_data;