diff options
Diffstat (limited to 'arch/mips/kernel/irq.c')
| -rw-r--r-- | arch/mips/kernel/irq.c | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index c3d831a8c479..8eb5af805964 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -25,44 +25,6 @@ #include <linux/atomic.h> #include <asm/uaccess.h> -static DECLARE_BITMAP(irq_map, NR_IRQS); - -int allocate_irqno(void) -{ - int irq; - -again: - irq = find_first_zero_bit(irq_map, NR_IRQS); - - if (irq >= NR_IRQS) - return -ENOSPC; - - if (test_and_set_bit(irq, irq_map)) - goto again; - - return irq; -} - -/* - * Allocate the 16 legacy interrupts for i8259 devices. This happens early - * in the kernel initialization so treating allocation failure as BUG() is - * ok. - */ -void __init alloc_legacy_irqno(void) -{ - int i; - - for (i = 0; i <= 16; i++) - BUG_ON(test_and_set_bit(i, irq_map)); -} - -void free_irqno(unsigned int irq) -{ - smp_mb__before_atomic(); - clear_bit(irq, irq_map); - smp_mb__after_atomic(); -} - /* * 'what should we do if we get a hw irq event on an illegal vector'. * each architecture has to answer this themselves. |