diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/sh/intc.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c index 4789df43c0f..a7e5c2e9986 100644 --- a/drivers/sh/intc.c +++ b/drivers/sh/intc.c @@ -928,3 +928,28 @@ void destroy_irq(unsigned int irq) __clear_bit(irq, intc_irq_map); spin_unlock_irqrestore(&vector_lock, flags); } + +int reserve_irq_vector(unsigned int irq) +{ + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&vector_lock, flags); + if (test_and_set_bit(irq, intc_irq_map)) + ret = -EBUSY; + spin_unlock_irqrestore(&vector_lock, flags); + + return ret; +} + +void reserve_irq_legacy(void) +{ + unsigned long flags; + int i, j; + + spin_lock_irqsave(&vector_lock, flags); + j = find_first_bit(intc_irq_map, nr_irqs); + for (i = 0; i < j; i++) + __set_bit(i, intc_irq_map); + spin_unlock_irqrestore(&vector_lock, flags); +} |