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authorIngo Molnar <mingo@elte.hu>2009-02-17 20:28:29 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-17 20:28:29 +0100
commit8316e38100c70cd1443ac90074eccdd033aa218d (patch)
tree155392d9a76df31a1934c181d24467cd93294986 /kernel
parentae88a23b32fa7e0dc9fa7ce735966e68eb41b0bc (diff)
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/manage.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 7a954b860c0..de5a765e88a 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -575,7 +575,7 @@ int setup_irq(unsigned int irq, struct irqaction *act)
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 @@ void free_irq(unsigned int irq, void *dev_id)
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 @@ void free_irq(unsigned int irq, void *dev_id)
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