On 3/29/07, Rajat Jain <rajat.noida.india@xxxxxxxxx> wrote:
> ok. but when the ISR receives the device id and who will pass this device id
> to the ISR ??
>
The Kernel.
this is the code who/which will pass this device id to the ISR
irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
{
irqreturn_t ret, retval = IRQ_NONE;
unsigned int status = 0;
handle_dynamic_tick(action);
if (!(action->flags & IRQF_DISABLED))
local_irq_enable_in_hardirq();
do {
ret = action->handler(irq, action->dev_id);
if (ret == IRQ_HANDLED)
status |= action->flags;
retval |= ret;
action = action->next;
} while (action);
if (status & IRQF_SAMPLE_RANDOM)
add_interrupt_randomness(irq);
local_irq_disable();
return retval;
}
--
Anubhav Rakshit
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