scsi_dh_alua: use scsi_vpd_tpg_id()
Use the common function 'scsi_vpd_tpg_id()' instead of open-coding it in scsi_dh_alua. [mkp: Applied by hand] Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> BugLink: http://bugs.launchpad.net/bugs/1567602 (cherry-picked from commit 83ea0e5e) Signed-off-by: Stefan Bader <stefan.bader@canonical.com> Acked-by: Brad Figg <brad.figg@canonical.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
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