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| author | Ingo Molnar <mingo@elte.hu> | 2006-06-29 02:24:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-29 10:26:21 -0700 |
| commit | 74ffd553a3a7fbae34be70b751852d5b6fe5acac (patch) | |
| tree | a92e746310fc73cc5577b8a1cb6e6552f8dc630a /kernel/irq/autoprobe.c | |
| parent | d1bef4ed5faf7d9872337b33c4269e45ae1bf960 (diff) | |
| download | linux-stable-74ffd553a3a7fbae34be70b751852d5b6fe5acac.tar.gz linux-stable-74ffd553a3a7fbae34be70b751852d5b6fe5acac.tar.bz2 linux-stable-74ffd553a3a7fbae34be70b751852d5b6fe5acac.zip | |
[PATCH] genirq: sem2mutex probe_sem -> probing_active
Convert the irq auto-probing semaphore to a mutex. (This allows us to find
probing API usage bugs sooner, via the mutex debugging code.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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; } |