[PATCH v1 1/4] max3100: added raise_threaded_irq
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From: Christian Pellegrin on 23 Mar 2010 06:40 raise_threaded_irq schedules the execution of an interrupt thread Signed-off-by: Christian Pellegrin <chripell(a)fsfe.org> --- include/linux/interrupt.h | 3 +++ kernel/irq/manage.c | 27 +++++++++++++++++++++++++++ 2 files changed, 30 insertions(+), 0 deletions(-) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 75f3f00..14c0c13 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -144,6 +144,9 @@ request_threaded_irq(unsigned int irq, irq_handler_t handler, static inline void exit_irq_thread(void) { } #endif +extern int raise_threaded_irq(unsigned int irq); + + extern void free_irq(unsigned int, void *); struct device; diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index eb6078c..a7d21e0 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1088,3 +1088,30 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler, return retval; } EXPORT_SYMBOL(request_threaded_irq); + +/** + * raise_threaded_irq - triggers a threded interrupt + * @irq: Interrupt line to trigger + */ +int raise_threaded_irq(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + struct irqaction *action; + + if (!desc) + return -ENOENT; + action = desc->action; + if (!action) + return -ENOENT; + if (unlikely(!action->thread_fn)) + return -EINVAL; + if (likely(!test_bit(IRQTF_DIED, + &action->thread_flags))) { + set_bit(IRQTF_RUNTHREAD, &action->thread_flags); + wake_up_process(action->thread); + } else { + return -ECHILD; + } + return 0; +} +EXPORT_SYMBOL(raise_threaded_irq); -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |