diff options
Diffstat (limited to 'kernel/irq/autoprobe.c')
| -rw-r--r-- | kernel/irq/autoprobe.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c index 6f1e68a46cbc..d1f1e6f10a23 100644 --- a/kernel/irq/autoprobe.c +++ b/kernel/irq/autoprobe.c @@ -16,7 +16,7 @@ * comes in on to an unassigned handler will get stuck with * "IRQ_WAITING" cleared and the interrupt disabled. */ -static DECLARE_MUTEX(probe_sem); +static DEFINE_MUTEX(probing_active); /** * probe_irq_on - begin an interrupt autodetect @@ -31,7 +31,7 @@ unsigned long probe_irq_on(void) irq_desc_t *desc; unsigned int i; - down(&probe_sem); + 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. @@ -132,7 +132,7 @@ unsigned int probe_irq_mask(unsigned long val) } spin_unlock_irq(&desc->lock); } - up(&probe_sem); + mutex_unlock(&probing_active); return mask & val; } @@ -177,10 +177,11 @@ int probe_irq_off(unsigned long val) } spin_unlock_irq(&desc->lock); } - up(&probe_sem); + mutex_unlock(&probing_active); if (nr_irqs > 1) irq_found = -irq_found; + return irq_found; } |