diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-24 12:48:46 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-24 12:48:46 +0200 |
commit | 8c82a17e9c924c0e9f13e75e4c2f6bca19a4b516 (patch) | |
tree | d535f46a917e14e90deccb29ad00aac016ad18dd /kernel/irq/autoprobe.c | |
parent | 4ce72a2c063a7fa8e42a9435440ae3364115a58d (diff) | |
parent | 57f8f7b60db6f1ed2c6918ab9230c4623a9dbe37 (diff) |
Merge commit 'v2.6.28-rc1' into sched/urgent
Diffstat (limited to 'kernel/irq/autoprobe.c')
-rw-r--r-- | kernel/irq/autoprobe.c | 43 |
1 files changed, 16 insertions, 27 deletions
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index 533068cfb60..cc0f7321b8c 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -30,17 +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_desc + i; - + for_each_irq_desc_reverse(i, desc) { spin_lock_irq(&desc->lock); if (!desc->action && !(desc->status & IRQ_NOPROBE)) { /* @@ -68,9 +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_desc + i; - + 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; @@ -88,11 +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_desc + i; + for_each_irq_desc(i, desc) { spin_lock_irq(&desc->lock); status = desc->status; @@ -126,14 +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_desc + i; - unsigned int status; - + for_each_irq_desc(i, desc) { spin_lock_irq(&desc->lock); status = desc->status; @@ -171,20 +161,19 @@ EXPORT_SYMBOL(probe_irq_mask); */ int probe_irq_off(unsigned long val) { - int i, irq_found = 0, nr_irqs = 0; - - for (i = 0; i < NR_IRQS; i++) { - struct irq_desc *desc = irq_desc + i; - unsigned int status; + int i, irq_found = 0, nr_of_irqs = 0; + struct irq_desc *desc; + unsigned int status; + for_each_irq_desc(i, desc) { spin_lock_irq(&desc->lock); status = desc->status; if (status & IRQ_AUTODETECT) { if (!(status & IRQ_WAITING)) { - if (!nr_irqs) + if (!nr_of_irqs) irq_found = i; - nr_irqs++; + nr_of_irqs++; } desc->status = status & ~IRQ_AUTODETECT; desc->chip->shutdown(i); @@ -193,7 +182,7 @@ int probe_irq_off(unsigned long val) } mutex_unlock(&probing_active); - if (nr_irqs > 1) + if (nr_of_irqs > 1) irq_found = -irq_found; return irq_found; |