irq: further clean up the free_irq() code flow
Linus noticed that the 'pp' variable can be eliminated
altogether, and the loop can be cleaned up further.
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 7a954b8..de5a765 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -575,7 +575,7 @@
void free_irq(unsigned int irq, void *dev_id)
{
struct irq_desc *desc = irq_to_desc(irq);
- struct irqaction *action, **p, **pp;
+ struct irqaction *action, **p;
unsigned long flags;
WARN(in_interrupt(), "Trying to free IRQ %d from IRQ context!\n", irq);
@@ -592,7 +592,6 @@
p = &desc->action;
for (;;) {
action = *p;
- pp = p;
if (!action) {
WARN(1, "Trying to free already-free IRQ %d\n", irq);
@@ -601,15 +600,13 @@
return;
}
+ if (action->dev_id == dev_id)
+ break;
p = &action->next;
- if (action->dev_id != dev_id)
- continue;
-
- break;
}
/* Found it - now remove it from the list of entries: */
- *pp = action->next;
+ *p = action->next;
/* Currently used only by UML, might disappear one day: */
#ifdef CONFIG_IRQ_RELEASE_METHOD