'\" t
.\"     Title: disable_hardirq
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Public Functions Provided
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DISABLE_HARDIRQ" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Public Functions Provided"
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.SH "NAME"
disable_hardirq \- disables an irq and waits for hardirq completion
.SH "SYNOPSIS"
.HP \w'bool\ disable_hardirq('u
.BI "bool disable_hardirq(unsigned\ int\ " "irq" ");"
.SH "ARGUMENTS"
.PP
\fIirq\fR
.RS 4
Interrupt to disable
.RE
.SH "DESCRIPTION"
.PP
Disable the selected interrupt line\&. Enables and Disables are nested\&. This function waits for any pending hard IRQ handlers for this interrupt to complete before returning\&. If you use this function while holding a resource the hard IRQ handler may need you will deadlock\&.
.PP
When used to optimistically disable an interrupt from atomic context the return value must be checked\&.
.SH "RETURN"
.PP
false if a threaded handler is active\&.
.PP
This function may be called \- with care \- from IRQ context\&.
.SH "AUTHORS"
.PP
\fBThomas Gleixner\fR <\&tglx@linutronix.de\&>
.RS 4
Author.
.RE
.PP
\fBIngo Molnar\fR <\&mingo@elte.hu\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br