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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:22:50 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 13:23:01 -0700 |
commit | 9301975ec251bab1ad7cfcb84a688b26187e4e4a (patch) | |
tree | 91e48be0bdc67cbcb75bc8a299a3dcf168e0a814 /kernel/irq/autoprobe.c | |
parent | 7110879cf2afbfb7af79675f5ff109e63d631c25 (diff) | |
parent | dd3a1db900f2a215a7d7dd71b836e149a6cf5fed (diff) | |
download | op-kernel-dev-9301975ec251bab1ad7cfcb84a688b26187e4e4a.zip op-kernel-dev-9301975ec251bab1ad7cfcb84a688b26187e4e4a.tar.gz |
Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.
The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]). The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.
* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
genirq: improve include files
intr_remapping: fix typo
io_apic: make irq_mis_count available on 64-bit too
genirq: fix name space collisions of nr_irqs in arch/*
genirq: fix name space collision of nr_irqs in autoprobe.c
genirq: use iterators for irq_desc loops
proc: fixup irq iterator
genirq: add reverse iterator for irq_desc
x86: move ack_bad_irq() to irq.c
x86: unify show_interrupts() and proc helpers
x86: cleanup show_interrupts
genirq: cleanup the sparseirq modifications
genirq: remove artifacts from sparseirq removal
genirq: revert dynarray
genirq: remove irq_to_desc_alloc
genirq: remove sparse irq code
genirq: use inline function for irq_to_desc
genirq: consolidate nr_irqs and for_each_irq_desc()
x86: remove sparse irq from Kconfig
genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
...
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 533068c..cc0f732 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; |