From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Jun 2006 09:24:46 +0000 (-0700)
Subject: [PATCH] genirq: doc: handle_IRQ_event() and __do_IRQ() comments
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d28bc751bb9ad479e33964d5d9eedfe5fb488a5;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] genirq: doc: handle_IRQ_event() and __do_IRQ() comments

Document handle_IRQ_event() and __do_IRQ().

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 8eda1005d10a..7fc7bc33d497 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -76,8 +76,13 @@ irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs)
 	return IRQ_NONE;
 }
 
-/*
- * Have got an event to handle:
+/**
+ * handle_IRQ_event - irq action chain handler
+ * @irq:	the interrupt number
+ * @regs:	pointer to a register structure
+ * @action:	the interrupt action chain for this irq
+ *
+ * Handles the action chain of an irq event
  */
 irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
 			     struct irqaction *action)
@@ -103,10 +108,17 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
 	return retval;
 }
 
-/*
- * do_IRQ handles all normal device IRQ's (the special
+/**
+ * __do_IRQ - original all in one highlevel IRQ handler
+ * @irq:	the interrupt number
+ * @regs:	pointer to a register structure
+ *
+ * __do_IRQ handles all normal device IRQ's (the special
  * SMP cross-CPU interrupts have their own specific
  * handlers).
+ *
+ * This is the original x86 implementation which is used for every
+ * interrupt type.
  */
 fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs)
 {