diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/autoprobe.c | 45 | ||||
| -rw-r--r-- | kernel/irq/handle.c | 5 |
2 files changed, 15 insertions, 35 deletions
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index b3a5549ea81e..0cbff18efb6d 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -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; diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index a69368ff607f..c815b42d0f5b 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -268,9 +268,10 @@ static struct lock_class_key irq_desc_lock_class; void early_init_irq_lock_class(void) { + struct irq_desc *desc; int i; - for (i = 0; i < nr_irqs; i++) - lockdep_set_class(&irq_desc[i].lock, &irq_desc_lock_class); + for_each_irq_desc(i, desc) + lockdep_set_class(&desc->lock, &irq_desc_lock_class); } #endif |