.\"	$OpenBSD: arm_drain_writebuf.2,v 1.3 2007/11/17 12:02:33 jmc Exp $
.\"	$NetBSD: arm_drain_writebuf.2,v 1.3 2004/02/13 09:56:47 wiz Exp $
.\"
.\" Copyright (c) 1997 Mark Brinicombe
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.Dd $Mdocdate: November 17 2007 $
.Dt ARM_DRAIN_WRITEBUF 2
.Os
.Sh NAME
.Nm arm_drain_writebuf
.Nd drains the CPU write buffer
.Sh SYNOPSIS
.In machine/sysarch.h
.Ft int
.Fn arm_drain_writebuf
.Sh DESCRIPTION
.Fn arm_drain_writebuf
will make sure that all the entries in the processor write buffer are
written out to memory.
.Pp
Not all processors support this operation (currently only the SA110 does).
Those processes that do not, treat this function as a null-op.
.Sh ERRORS
.Fn arm_drain_writebuf
will never fail so will always return 0.
.Sh REFERENCES
StrongARM Data Sheet