genirq: Expand doc for PENDING and REPLAY flags

Adding a bit more info about what the flags are used for may help future
code readers.

Signed-off-by: James Gowans <jgowans@amazon.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Liao Chang <liaochang1@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230608120021.3273400-2-jgowans@amazon.com

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 5fdc0b557579796273aa9269f339f1ecef944439..c443a0ddc07ec1b3897c23b5c449775f9f167cff 100644 (file)
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -47,9 +47,12 @@ enum {
  *                               detection
  * IRQS_POLL_INPROGRESS                - polling in progress
  * IRQS_ONESHOT                        - irq is not unmasked in primary handler
- * IRQS_REPLAY                 - irq is replayed
+ * IRQS_REPLAY                 - irq has been resent and will not be resent
+ *                               again until the handler has run and cleared
+ *                               this flag.
  * IRQS_WAITING                        - irq is waiting
- * IRQS_PENDING                        - irq is pending and replayed later
+ * IRQS_PENDING                        - irq needs to be resent and should be resent
+ *                               at the next available opportunity.
  * IRQS_SUSPENDED              - irq is suspended
  * IRQS_NMI                    - irq line is used to deliver NMIs
  * IRQS_SYSFS                  - descriptor has been added to sysfs