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module(9): Document that evhand can be NULL

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PR:		192250
MFC after:	3 days
Reported by:	ngie
This commit is contained in:
Felix Johnson 2021-11-11 01:28:45 -05:00 committed by Guangyuan Yang
parent 448bcd01dc
commit c5e0492ae8
1 changed files with 4 additions and 1 deletions
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5
share/man/man9/module.9
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@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd February 12, 2018
.Dd November 11, 2021
.Dt MODULE 9
.Os
.Sh NAME
@ -42,6 +42,9 @@ The structure contains the name of the device, a unique ID number,
a pointer to an event handler function and to an argument,
which is given to the event handler,
as well as some kernel internal data.
If the event handler function is
.Dv NULL ,
the module will use a no-operation function handler instead.
.Pp
The
.Xr DECLARE_MODULE 9