scsi: use 64-bit LUNs

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c
index a3adfb4357f5..fabd4be2c985 100644
--- a/drivers/scsi/53c700.c
+++ b/drivers/scsi/53c700.c
@@ -1005,7 +1005,7 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp,
                                                  DMA_TO_DEVICE);
 
                                 cmnd[0] = REQUEST_SENSE;
-                                cmnd[1] = (SCp->device->lun & 0x7) << 5;
+                                cmnd[1] = (lun & 0x7) << 5;
                                 cmnd[2] = 0;
                                 cmnd[3] = 0;
                                 cmnd[4] = SCSI_SENSE_BUFFERSIZE;
@@ -1396,7 +1396,8 @@ NCR_700_start_command(struct scsi_cmnd *SCp)
         struct NCR_700_Host_Parameters *hostdata =
                 (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0];
         __u16 count = 1;        /* for IDENTIFY message */
-        
+        u8 lun = SCp->device->lun;
+
         if(hostdata->state != NCR_700_HOST_FREE) {
                 /* keep this inside the lock to close the race window where
                  * the running command finishes on another CPU while we don't
@@ -1415,7 +1416,7 @@ NCR_700_start_command(struct scsi_cmnd *SCp)
 
         hostdata->msgout[0] = NCR_700_identify((SCp->cmnd[0] != REQUEST_SENSE &&
                                                 slot->flags != NCR_700_FLAG_AUTOSENSE),
-                                               SCp->device->lun);
+                                               lun);
         /* for INQUIRY or REQUEST_SENSE commands, we cannot be sure
          * if the negotiated transfer parameters still hold, so
          * always renegotiate them */