linux-kernel - [PATCH 1/2] genirq: Expand doc for PENDING and REPLAY flags

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Date:   Tue, 30 May 2023 23:38:47 +0200
From:   James Gowans <jgowans@...zon.com>
To:     Thomas Gleixner <tglx@...utronix.de>
CC:     <linux-kernel@...r.kernel.org>, James Gowans <jgowans@...zon.com>,
        Marc Zyngier <maz@...nel.org>,
        Liao Chang <liaochang1@...wei.com>
Subject: [PATCH 1/2] 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@...zon.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Liao Chang <liaochang1@...wei.com>
---
 kernel/irq/internals.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 5fdc0b557579..c443a0ddc07e 100644
--- 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
-- 
2.25.1