'\" t
.\"     Title: ata_host_alloc
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: libata Library
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ATA_HOST_ALLOC" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "libata Library"
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.SH "NAME"
ata_host_alloc \- allocate and init basic ATA host resources
.SH "SYNOPSIS"
.HP \w'struct\ ata_host\ *\ ata_host_alloc('u
.BI "struct ata_host * ata_host_alloc(struct\ device\ *\ " "dev" ", int\ " "max_ports" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
generic device this host is associated with
.RE
.PP
\fImax_ports\fR
.RS 4
maximum number of ATA ports associated with this host
.RE
.SH "DESCRIPTION"
.PP
Allocate and initialize basic ATA host resources\&. LLD calls this function to allocate a host, initializes it fully and attaches it using
\fBata_host_register\fR\&.
.PP
\fImax_ports\fR
ports are allocated and host\->n_ports is initialized to
\fImax_ports\fR\&. The caller is allowed to decrease host\->n_ports before calling
\fBata_host_register\fR\&. The unused ports will be automatically freed on registration\&.
.SH "RETURN"
.PP
Allocate ATA host on success, NULL on failure\&.
.PP
LOCKING: Inherited from calling layer (may sleep)\&.
.SH "AUTHOR"
.PP
\fBJeff Garzik\fR
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br