'\" t
.\"     Title: scsi_get_vpd_page
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: SCSI mid layer
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SCSI_GET_VPD_PAGE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "SCSI mid layer"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
scsi_get_vpd_page \- Get Vital Product Data from a SCSI device
.SH "SYNOPSIS"
.HP \w'int\ scsi_get_vpd_page('u
.BI "int scsi_get_vpd_page(struct\ scsi_device\ *\ " "sdev" ", u8\ " "page" ", unsigned\ char\ *\ " "buf" ", int\ " "buf_len" ");"
.SH "ARGUMENTS"
.PP
\fIsdev\fR
.RS 4
The device to ask
.RE
.PP
\fIpage\fR
.RS 4
Which Vital Product Data to return
.RE
.PP
\fIbuf\fR
.RS 4
where to store the VPD
.RE
.PP
\fIbuf_len\fR
.RS 4
number of bytes in the VPD buffer area
.RE
.SH "DESCRIPTION"
.PP
SCSI devices may optionally supply Vital Product Data\&. Each \*(Aqpage\*(Aq of VPD is defined in the appropriate SCSI document (eg SPC, SBC)\&. If the device supports this VPD page, this routine returns a pointer to a buffer containing the data from that page\&. The caller is responsible for calling
\fBkfree\fR
on this pointer when it is no longer needed\&. If we cannot retrieve the VPD page this routine returns
\fBNULL\fR\&.
.SH "AUTHORS"
.PP
\fBJames Bottomley\fR <\&James.Bottomley@hansenpartnership.com\&>
.RS 4
Author.
.RE
.PP
\fBRob Landley\fR <\&rob@landley.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br