SCSI_GET_VPD_PAGE(9)                      SCSI mid layer                     SCSI_GET_VPD_PAGE(9)



NAME
       scsi_get_vpd_page - Get Vital Product Data from a SCSI device

SYNOPSIS
       int scsi_get_vpd_page(struct scsi_device * sdev, u8 page, unsigned char * buf,
                             int buf_len);

ARGUMENTS
       sdev
           The device to ask

       page
           Which Vital Product Data to return

       buf
           where to store the VPD

       buf_len
           number of bytes in the VPD buffer area

DESCRIPTION
       SCSI devices may optionally supply Vital Product Data. Each 'page' 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 kfree on this pointer when it is no longer needed. If we cannot
       retrieve the VPD page this routine returns NULL.

AUTHORS
       James Bottomley <James.Bottomley AT hansenpartnership.com>
           Author.

       Rob Landley <rob AT landley.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      SCSI_GET_VPD_PAGE(9)