'\" t
.\"     Title: fence_remove_callback
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Device drivers infrastructure
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "FENCE_REMOVE_CALLBAC" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
fence_remove_callback \- remove a callback from the signaling list
.SH "SYNOPSIS"
.HP \w'bool\ fence_remove_callback('u
.BI "bool fence_remove_callback(struct\ fence\ *\ " "fence" ", struct\ fence_cb\ *\ " "cb" ");"
.SH "ARGUMENTS"
.PP
\fIfence\fR
.RS 4
[in] the fence to wait on
.RE
.PP
\fIcb\fR
.RS 4
[in] the callback to remove
.RE
.SH "DESCRIPTION"
.PP
Remove a previously queued callback from the fence\&. This function returns true if the callback is successfully removed, or false if the fence has already been signaled\&.
.PP
*WARNING*: Cancelling a callback should only be done if you really know what you\*(Aqre doing, since deadlocks and race conditions could occur all too easily\&. For this reason, it should only ever be done on hardware lockup recovery, with a reference held to the fence\&.
.SH "COPYRIGHT"
.br