[PATCH] genirq: cleanup: misc code cleanups
Assorted code cleanups to the generic IRQ code.
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/spurious.c b/kernel/irq/spurious.c
index ea3ceed..5eae7bf 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -16,22 +16,20 @@
/*
* Recovery handler for misrouted interrupts.
*/
-
static int misrouted_irq(int irq, struct pt_regs *regs)
{
int i;
- irq_desc_t *desc;
int ok = 0;
int work = 0; /* Did we do work for a real IRQ */
- for(i = 1; i < NR_IRQS; i++) {
+ for (i = 1; i < NR_IRQS; i++) {
+ struct irq_desc *desc = irq_desc + i;
struct irqaction *action;
if (i == irq) /* Already tried */
continue;
- desc = &irq_desc[i];
+
spin_lock(&desc->lock);
- action = desc->action;
/* Already running on another processor */
if (desc->status & IRQ_INPROGRESS) {
/*
@@ -45,7 +43,9 @@
}
/* Honour the normal IRQ locking */
desc->status |= IRQ_INPROGRESS;
+ action = desc->action;
spin_unlock(&desc->lock);
+
while (action) {
/* Only shared IRQ handlers are safe to call */
if (action->flags & SA_SHIRQ) {
@@ -62,9 +62,8 @@
/*
* While we were looking for a fixup someone queued a real
- * IRQ clashing with our walk
+ * IRQ clashing with our walk:
*/
-
while ((desc->status & IRQ_PENDING) && action) {
/*
* Perform real IRQ processing for the IRQ we deferred
@@ -80,7 +79,7 @@
* If we did actual work for the real IRQ line we must let the
* IRQ controller clean up too
*/
- if(work)
+ if (work)
desc->chip->end(i);
spin_unlock(&desc->lock);
}
@@ -113,6 +112,7 @@
}
dump_stack();
printk(KERN_ERR "handlers:\n");
+
action = desc->action;
while (action) {
printk(KERN_ERR "[<%p>]", action->handler);
@@ -123,7 +123,8 @@
}
}
-static void report_bad_irq(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret)
+static void
+report_bad_irq(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret)
{
static int count = 100;
@@ -134,7 +135,7 @@
}
void note_interrupt(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret,
- struct pt_regs *regs)
+ struct pt_regs *regs)
{
if (unlikely(action_ret != IRQ_HANDLED)) {
desc->irqs_unhandled++;
@@ -177,6 +178,7 @@
{
noirqdebug = 1;
printk(KERN_INFO "IRQ lockup detection disabled\n");
+
return 1;
}
@@ -187,6 +189,7 @@
irqfixup = 1;
printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n");
printk(KERN_WARNING "This may impact system performance.\n");
+
return 1;
}