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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-29 03:50:33 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-29 03:50:33 -0500 |
| commit | 2226340eb8df9c42f9fca74582d08d5117fc0cec (patch) | |
| tree | c98370844715194600b79f886dbc391633f3e470 /kernel/irq/manage.c | |
| parent | 2e06cb5859fdaeba0529806eb1bf161ffd0db201 (diff) | |
| parent | 624f54be206adf970cd8eece16446b027913e533 (diff) | |
| download | kernel-crypto-2226340eb8df9c42f9fca74582d08d5117fc0cec.tar.gz kernel-crypto-2226340eb8df9c42f9fca74582d08d5117fc0cec.tar.xz kernel-crypto-2226340eb8df9c42f9fca74582d08d5117fc0cec.zip | |
Merge branch 'master'
Diffstat (limited to 'kernel/irq/manage.c')
| -rw-r--r-- | kernel/irq/manage.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 3bd7226d15f..81c49a4d679 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -36,6 +36,9 @@ void synchronize_irq(unsigned int irq) { struct irq_desc *desc = irq_desc + irq; + if (irq >= NR_IRQS) + return; + while (desc->status & IRQ_INPROGRESS) cpu_relax(); } @@ -60,6 +63,9 @@ void disable_irq_nosync(unsigned int irq) irq_desc_t *desc = irq_desc + irq; unsigned long flags; + if (irq >= NR_IRQS) + return; + spin_lock_irqsave(&desc->lock, flags); if (!desc->depth++) { desc->status |= IRQ_DISABLED; @@ -86,6 +92,9 @@ void disable_irq(unsigned int irq) { irq_desc_t *desc = irq_desc + irq; + if (irq >= NR_IRQS) + return; + disable_irq_nosync(irq); if (desc->action) synchronize_irq(irq); @@ -108,6 +117,9 @@ void enable_irq(unsigned int irq) irq_desc_t *desc = irq_desc + irq; unsigned long flags; + if (irq >= NR_IRQS) + return; + spin_lock_irqsave(&desc->lock, flags); switch (desc->depth) { case 0: @@ -163,6 +175,9 @@ int setup_irq(unsigned int irq, struct irqaction * new) unsigned long flags; int shared = 0; + if (irq >= NR_IRQS) + return -EINVAL; + if (desc->handler == &no_irq_type) return -ENOSYS; /* |