synchronize_irq (9) Linux Manual Page
synchronize_irq – wait for pending IRQ handlers (on other CPUs)
Synopsis
void synchronize_irq(unsigned int irq);Arguments
irq
-
- interrupt number to wait for
Description
This function waits for any pending IRQ handlers for this interrupt to complete before returning. If you use this function while holding a resource the IRQ handler may need you will deadlock.
This function may be called – with care – from IRQ context.