'\" t
.\"     Title: ata_dev_read_id
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: libata Core Internals
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ATA_DEV_READ_ID" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "libata Core Internals"
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.SH "NAME"
ata_dev_read_id \- Read ID data from the specified device
.SH "SYNOPSIS"
.HP \w'int\ ata_dev_read_id('u
.BI "int ata_dev_read_id(struct\ ata_device\ *\ " "dev" ", unsigned\ int\ *\ " "p_class" ", unsigned\ int\ " "flags" ", u16\ *\ " "id" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
target device
.RE
.PP
\fIp_class\fR
.RS 4
pointer to class of the target device (may be changed)
.RE
.PP
\fIflags\fR
.RS 4
ATA_READID_* flags
.RE
.PP
\fIid\fR
.RS 4
buffer to read IDENTIFY data into
.RE
.SH "DESCRIPTION"
.PP
Read ID data from the specified device\&. ATA_CMD_ID_ATA is performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI devices\&. This function also issues ATA_CMD_INIT_DEV_PARAMS for pre\-ATA4 drives\&.
.PP
FIXME: ATA_CMD_ID_ATA is optional for early drives and right now we abort if we hit that case\&.
.PP
LOCKING: Kernel thread context (may sleep)
.SH "RETURN"
.PP
0 on success, \-errno otherwise\&.
.SH "AUTHOR"
.PP
\fBJeff Garzik\fR
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br