---
name: "enable_irq"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/enable_irq"
---

# enable\_irq(9)

enable handling of an irq

## NAME

enable\_irq - enable handling of an irq

## SYNOPSIS

**void enable\_irq(unsigned int** *irq***);**

## ARGUMENTS

*irq*

Interrupt to enable

## DESCRIPTION

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 !

## AUTHORS

**Thomas Gleixner** \<tglx@linutronix.de\>

Author.

**Ingo Molnar** \<mingo@elte.hu\>

Author.

## COPYRIGHT