enable_irq (9)

void enable_irq(unsigned int irq);

irq

Interrupt to enable

Undoes the effect of one call to disable_irq. If this matches the last disable, processing of interrupts on this IRQ line is re-enabled.

This function may be called from IRQ context only when desc->irq_data.chip->bus_lock and desc->chip->bus_sync_unlock are NULL !