other versions
- jessie 3.16.56-1+deb8u1
HANDLE_EDGE_IRQ(9) | Public Functions Provided | HANDLE_EDGE_IRQ(9) |
NAME¶
handle_edge_irq - edge type IRQ handlerSYNOPSIS¶
void
handle_edge_irq(unsigned int irq,
struct irq_desc * desc);
ARGUMENTS¶
irqthe interrupt number
desc
the interrupt description structure for this irq
DESCRIPTION¶
Interrupt occures on the falling and/or rising edge of a hardware signal. The occurrence is latched into the irq controller hardware and must be acked in order to be reenabled. After the ack another interrupt can happen on the same source even before the first one is handled by the associated event handler. If this happens it might be necessary to disable (mask) the interrupt depending on the controller hardware. This requires to reenable the interrupt inside of the loop which handles the interrupts which have arrived while the handler was running. If all pending interrupts are handled, the loop is left.AUTHORS¶
Thomas Gleixner <tglx@linutronix.de>Author.
Ingo Molnar <mingo@elte.hu>
Author.
COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |