'\" t
.\"     Title: dma_alloc_from_coherent
.\"    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 "DMA_ALLOC_FROM_COHER" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
dma_alloc_from_coherent \- try to allocate memory from the per\-device coherent area
.SH "SYNOPSIS"
.HP \w'int\ dma_alloc_from_coherent('u
.BI "int dma_alloc_from_coherent(struct\ device\ *\ " "dev" ", ssize_t\ " "size" ", dma_addr_t\ *\ " "dma_handle" ", void\ **\ " "ret" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
device from which we allocate memory
.RE
.PP
\fIsize\fR
.RS 4
size of requested memory area
.RE
.PP
\fIdma_handle\fR
.RS 4
This will be filled with the correct dma handle
.RE
.PP
\fIret\fR
.RS 4
This pointer will be filled with the virtual address to allocated area\&.
.RE
.SH "DESCRIPTION"
.PP
This function should be only called from per\-arch
\fBdma_alloc_coherent\fR
to support allocation from per\-device coherent memory pools\&.
.PP
Returns 0 if dma_alloc_coherent should continue with allocating from generic memory areas, or !0 if dma_alloc_coherent should return
\fIret\fR\&.
.SH "COPYRIGHT"
.br