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-rw-r--r--kernel/irq/manage.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1782f90cd8..7389add527 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1642,8 +1642,13 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
}
if (!((old->flags & new->flags) & IRQF_SHARED) ||
- (oldtype != (new->flags & IRQF_TRIGGER_MASK)) ||
- ((old->flags ^ new->flags) & IRQF_ONESHOT))
+ (oldtype != (new->flags & IRQF_TRIGGER_MASK)))
+ goto mismatch;
+
+ if ((old->flags & IRQF_ONESHOT) &&
+ (new->flags & IRQF_COND_ONESHOT))
+ new->flags |= IRQF_ONESHOT;
+ else if ((old->flags ^ new->flags) & IRQF_ONESHOT)
goto mismatch;
/* All handlers must agree on per-cpuness */