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genirq: use iterators for irq_desc loops

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Use for_each_irq_desc[_reverse] for all the iteration loops.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2008-10-16 14:19:04 +02:00
committed by Ingo Molnar
parent 2be3b52a57
commit 10e580842e
3 changed files with 21 additions and 43 deletions
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kernel/irq/autoprobe.c
+12 -33
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@@ -30,19 +30,16 @@ static DEFINE_MUTEX(probing_active);
unsigned long probe_irq_on(void)
{
struct irq_desc *desc;
unsigned long mask;
unsigned int i;
unsigned long mask = 0;
unsigned int status;
int i;
mutex_lock(&probing_active);
/*
* something may have generated an irq long ago and we want to
* flush such a longstanding irq before considering it as spurious.
*/
for (i = nr_irqs-1; i > 0; i--) {
desc = irq_to_desc(i);
if (!desc)
continue;
for_each_irq_desc_reverse(i, desc) {
spin_lock_irq(&desc->lock);
if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
/*
@@ -70,11 +67,7 @@ unsigned long probe_irq_on(void)
* (we must startup again here because if a longstanding irq
* happened in the previous stage, it may have masked itself)
*/
for (i = nr_irqs-1; i > 0; i--) {
desc = irq_to_desc(i);
if (!desc)
continue;
for_each_irq_desc_reverse(i, desc) {
spin_lock_irq(&desc->lock);
if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
@@ -92,13 +85,7 @@ unsigned long probe_irq_on(void)
/*
* Now filter out any obviously spurious interrupts
*/
mask = 0;
for (i = 0; i < nr_irqs; i++) {
unsigned int status;
desc = irq_to_desc(i);
if (!desc)
continue;
for_each_irq_desc(i, desc) {
spin_lock_irq(&desc->lock);
status = desc->status;
@@ -132,16 +119,11 @@ EXPORT_SYMBOL(probe_irq_on);
*/
unsigned int probe_irq_mask(unsigned long val)
{
unsigned int mask;
unsigned int status, mask = 0;
struct irq_desc *desc;
int i;
mask = 0;
for (i = 0; i < nr_irqs; i++) {
struct irq_desc *desc = irq_to_desc(i);
unsigned int status;
if (!desc)
continue;
for_each_irq_desc(i, desc) {
spin_lock_irq(&desc->lock);
status = desc->status;
@@ -180,13 +162,10 @@ EXPORT_SYMBOL(probe_irq_mask);
int probe_irq_off(unsigned long val)
{
int i, irq_found = 0, nr_irqs = 0;
struct irq_desc *desc;
unsigned int status;
for (i = 0; i < nr_irqs; i++) {
struct irq_desc *desc = irq_to_desc(i);
unsigned int status;
if (!desc)
continue;
for_each_irq_desc(i, desc) {
spin_lock_irq(&desc->lock);
status = desc->status;