I have a question with respect to request_threaded_irq.
Assume that one driver has registered and ISR on some particular irq number.
Can i use the same irq number and register and isr in another driver. Because that is my requirement.
when i try to do that is an error message with an error no as -19.
err = request_threaded_irq(pdata->irq , NULL, testing_fucntion,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "testing_function", dev);
Can some one please help me whether it is possible.
Regards,
RB
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