diff options
author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-13 21:55:51 +1030 |
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committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-13 21:55:51 +1030 |
commit | 968ea6d80e395cf11a51143cfa1b9a14ada676df (patch) | |
tree | dc2acec8c9bdced33afe1e273ee5e0b0b93d2703 /kernel/irq/autoprobe.c | |
parent | 7be7585393d311866653564fbcd10a3232773c0b (diff) | |
parent | 8299608f140ae321e4eb5d1306184265d2b9511e (diff) |
Merge ../linux-2.6-x86
Conflicts:
arch/x86/kernel/io_apic.c
kernel/sched.c
kernel/sched_stats.h
Diffstat (limited to 'kernel/irq/autoprobe.c')
-rw-r--r-- | kernel/irq/autoprobe.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index cc0f7321b8c..650ce4102a6 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -40,6 +40,9 @@ unsigned long probe_irq_on(void) * flush such a longstanding irq before considering it as spurious. */ for_each_irq_desc_reverse(i, desc) { + if (!desc) + continue; + spin_lock_irq(&desc->lock); if (!desc->action && !(desc->status & IRQ_NOPROBE)) { /* @@ -68,6 +71,9 @@ unsigned long probe_irq_on(void) * happened in the previous stage, it may have masked itself) */ for_each_irq_desc_reverse(i, desc) { + if (!desc) + continue; + spin_lock_irq(&desc->lock); if (!desc->action && !(desc->status & IRQ_NOPROBE)) { desc->status |= IRQ_AUTODETECT | IRQ_WAITING; @@ -86,6 +92,9 @@ unsigned long probe_irq_on(void) * Now filter out any obviously spurious interrupts */ for_each_irq_desc(i, desc) { + if (!desc) + continue; + spin_lock_irq(&desc->lock); status = desc->status; @@ -124,6 +133,9 @@ unsigned int probe_irq_mask(unsigned long val) int i; for_each_irq_desc(i, desc) { + if (!desc) + continue; + spin_lock_irq(&desc->lock); status = desc->status; @@ -166,6 +178,9 @@ int probe_irq_off(unsigned long val) unsigned int status; for_each_irq_desc(i, desc) { + if (!desc) + continue; + spin_lock_irq(&desc->lock); status = desc->status; |