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scsi: Add scsi_vpd_tpg_id()

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Implement scsi_vpd_tpg_id() to extract the target
port group id and the relative port id from
SCSI VPD page 0x83.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke
2015-12-01 10:16:57 +01:00
committed by Martin K. Petersen
parent 248d4fe95f
commit a8aa397858
2 changed files with 49 additions and 0 deletions
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include/scsi/scsi_device.h
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@@ -416,6 +416,7 @@ static inline int scsi_execute_req(struct scsi_device *sdev,
extern void sdev_disable_disk_events(struct scsi_device *sdev);
extern void sdev_enable_disk_events(struct scsi_device *sdev);
extern int scsi_vpd_lun_id(struct scsi_device *, char *, size_t);
extern int scsi_vpd_tpg_id(struct scsi_device *, int *);
#ifdef CONFIG_PM
extern int scsi_autopm_get_device(struct scsi_device *);