irqdomain: Avoid activating interrupts more than once

[mirror_ubuntu-artful-kernel.git] / include / linux / irq.h

diff --git a/include/linux/irq.h b/include/linux/irq.h
index e79875574b393f33ed183fdc8f44277a49c26ba8..39e3254e5769d7da1d0f74cdfdf90bd9b40cfc8a 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -184,6 +184,7 @@ struct irq_data {
  *
  * IRQD_TRIGGER_MASK           - Mask for the trigger type bits
  * IRQD_SETAFFINITY_PENDING    - Affinity setting is pending
+ * IRQD_ACTIVATED              - Interrupt has already been activated
  * IRQD_NO_BALANCING           - Balancing disabled for this IRQ
  * IRQD_PER_CPU                        - Interrupt is per cpu
  * IRQD_AFFINITY_SET           - Interrupt affinity was set
@@ -202,6 +203,7 @@ struct irq_data {
 enum {
        IRQD_TRIGGER_MASK               = 0xf,
        IRQD_SETAFFINITY_PENDING        = (1 <<  8),
+       IRQD_ACTIVATED                  = (1 <<  9),
        IRQD_NO_BALANCING               = (1 << 10),
        IRQD_PER_CPU                    = (1 << 11),
        IRQD_AFFINITY_SET               = (1 << 12),
@@ -312,6 +314,21 @@ static inline bool irqd_affinity_is_managed(struct irq_data *d)
        return __irqd_to_state(d) & IRQD_AFFINITY_MANAGED;
 }
 
+static inline bool irqd_is_activated(struct irq_data *d)
+{
+       return __irqd_to_state(d) & IRQD_ACTIVATED;
+}
+
+static inline void irqd_set_activated(struct irq_data *d)
+{
+       __irqd_to_state(d) |= IRQD_ACTIVATED;
+}
+
+static inline void irqd_clr_activated(struct irq_data *d)
+{
+       __irqd_to_state(d) &= ~IRQD_ACTIVATED;
+}
+
 #undef __irqd_to_state
 
 static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)