genirq: Add irq disabled flag to irq_data state

Some irq_chip implementation require to know the disabled state of the
interrupt in certain callbacks. Add a state flag and accessor to
irq_data.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 5d876c9b3a3d..8649b0fb9daf 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -174,6 +174,8 @@ struct irq_data {
  *                                from suspend
  * IRDQ_MOVE_PCNTXT             - Interrupt can be moved in process
  *                                context
+ * IRQD_IRQ_DISABLED            - Some chip function need to know the
+ *                                disabled state.
  */
 enum {
         IRQD_TRIGGER_MASK               = 0xf,
@@ -184,6 +186,7 @@ enum {
         IRQD_LEVEL                      = (1 << 13),
         IRQD_WAKEUP_STATE               = (1 << 14),
         IRQD_MOVE_PCNTXT                = (1 << 15),
+        IRQD_IRQ_DISABLED               = (1 << 16),
 };
 
 static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
@@ -235,6 +238,11 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d)
         return d->state_use_accessors & IRQD_MOVE_PCNTXT;
 }
 
+static inline bool irqd_irq_disabled(struct irq_data *d)
+{
+        return d->state_use_accessors & IRQD_IRQ_DISABLED;
+}
+
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *