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[PATCH] genirq: cleanup: misc code cleanups

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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>
This commit is contained in:
Ingo Molnar
2006-06-29 02:24:40 -07:00
committed by Linus Torvalds
parent 2e60bbb6d5
commit 06fcb0c6fb
5 changed files with 66 additions and 60 deletions
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23
kernel/irq/spurious.c
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@@ -16,22 +16,20 @@ static int irqfixup __read_mostly;
/*
* 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 @@ static int misrouted_irq(int irq, struct pt_regs *regs)
}
/* 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 @@ static int misrouted_irq(int irq, struct pt_regs *regs)
/*
* 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 @@ static int misrouted_irq(int irq, struct pt_regs *regs)
* 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 @@ __report_bad_irq(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret)
}
dump_stack();
printk(KERN_ERR "handlers:\n");
action = desc->action;
while (action) {
printk(KERN_ERR "[<%p>]", action->handler);
@@ -123,7 +123,8 @@ __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 void
report_bad_irq(unsigned int irq, irq_desc_t *desc, irqreturn_t action_ret)
{
static int count = 100;
@@ -134,7 +135,7 @@ static void report_bad_irq(unsigned int irq, irq_desc_t *desc, irqreturn_t actio
}
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 @@ int __init noirqdebug_setup(char *str)
{
noirqdebug = 1;
printk(KERN_INFO "IRQ lockup detection disabled\n");
return 1;
}
@@ -187,6 +189,7 @@ static int __init irqfixup_setup(char *str)
irqfixup = 1;
printk(KERN_WARNING "Misrouted IRQ fixup support enabled.\n");
printk(KERN_WARNING "This may impact system performance.\n");
return 1;
}