'\" t
.\"     Title: snd_pcm_lib_preallocate_pages
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Sound Devices
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "SND_PCM_LIB_PREALLOC" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Sound Devices"
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.SH "NAME"
snd_pcm_lib_preallocate_pages \- pre\-allocation for the given DMA type
.SH "SYNOPSIS"
.HP \w'int\ snd_pcm_lib_preallocate_pages('u
.BI "int snd_pcm_lib_preallocate_pages(struct\ snd_pcm_substream\ *\ " "substream" ", int\ " "type" ", struct\ device\ *\ " "data" ", size_t\ " "size" ", size_t\ " "max" ");"
.SH "ARGUMENTS"
.PP
\fIsubstream\fR
.RS 4
the pcm substream instance
.RE
.PP
\fItype\fR
.RS 4
DMA type (SNDRV_DMA_TYPE_*)
.RE
.PP
\fIdata\fR
.RS 4
DMA type dependent data
.RE
.PP
\fIsize\fR
.RS 4
the requested pre\-allocation size in bytes
.RE
.PP
\fImax\fR
.RS 4
the max\&. allowed pre\-allocation size
.RE
.SH "DESCRIPTION"
.PP
Do pre\-allocation for the given DMA buffer type\&.
.SH "RETURN"
.PP
Zero if successful, or a negative error code on failure\&.
.SH "COPYRIGHT"
.br