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>

5 files changed, 12 insertions, 11 deletions

diff --git a/drivers/scsi/aic7xxx/aic79xx.h b/drivers/scsi/aic7xxx/aic79xx.h
index 113874c1284b..df2e0e5367d2 100644
--- a/drivers/scsi/aic7xxx/aic79xx.h
+++ b/drivers/scsi/aic7xxx/aic79xx.h
@@ -115,7 +115,7 @@ struct scb_platform_data;
 #endif
 
 #define AHD_BUILD_COL_IDX(target, lun)				\
-	(((lun) << 4) | target)
+	((((u8)lun) << 4) | target)
 
 #define AHD_GET_SCB_COL_IDX(ahd, scb)				\
 	((SCB_GET_LUN(scb) << 4) | SCB_GET_TARGET(ahd, scb))
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 69d5c43a65e5..ed333669a7dc 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -2137,7 +2137,7 @@ ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
 	if (do_fallback) {
 		printk("%s: device overrun (status %x) on %d:%d:%d\n",
 		       ahd_name(ahd), status, cmd->device->channel,
-		       cmd->device->id, cmd->device->lun);
+		       cmd->device->id, (u8)cmd->device->lun);
 	}
 
 	ahd_cmd_set_transaction_status(cmd, new_status);
@@ -2253,13 +2253,13 @@ ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
 	disconnected = TRUE;
 	if (ahd_search_qinfifo(ahd, cmd->device->id, 
 			       cmd->device->channel + 'A',
-			       cmd->device->lun, 
+			       cmd->device->lun,
 			       pending_scb->hscb->tag,
 			       ROLE_INITIATOR, CAM_REQ_ABORTED,
 			       SEARCH_COMPLETE) > 0) {
 		printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
 		       ahd_name(ahd), cmd->device->channel, 
-		       cmd->device->id, cmd->device->lun);
+		       cmd->device->id, (u8)cmd->device->lun);
 		retval = SUCCESS;
 		goto done;
 	}
diff --git a/drivers/scsi/aic7xxx/aic79xx_proc.c b/drivers/scsi/aic7xxx/aic79xx_proc.c
index e9778b4f7e32..27dbfccea774 100644
--- a/drivers/scsi/aic7xxx/aic79xx_proc.c
+++ b/drivers/scsi/aic7xxx/aic79xx_proc.c
@@ -197,7 +197,7 @@ ahd_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
 
 	seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
 		  sdev->sdev_target->channel + 'A',
-		  sdev->sdev_target->id, sdev->lun);
+		   sdev->sdev_target->id, (u8)sdev->lun);
 
 	seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
 	seq_printf(m, "\t\tCommands Active %d\n", dev->active);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 114ff0c6e311..d2c9bf39033d 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -2110,7 +2110,7 @@ ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 		 */
 		printk("%s:%d:%d:%d: Is not an active device\n",
 		       ahc_name(ahc), cmd->device->channel, cmd->device->id,
-		       cmd->device->lun);
+		       (u8)cmd->device->lun);
 		retval = SUCCESS;
 		goto no_cmd;
 	}
@@ -2118,11 +2118,11 @@ ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 	if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
 	 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
 				       cmd->device->channel + 'A',
-				       cmd->device->lun,
+				       (u8)cmd->device->lun,
 				       CAM_REQ_ABORTED, SEARCH_COMPLETE) != 0) {
 		printk("%s:%d:%d:%d: Command found on untagged queue\n",
 		       ahc_name(ahc), cmd->device->channel, cmd->device->id,
-		       cmd->device->lun);
+		       (u8)cmd->device->lun);
 		retval = SUCCESS;
 		goto done;
 	}
@@ -2188,13 +2188,14 @@ ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 				       SEARCH_COMPLETE) > 0) {
 			printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
 			       ahc_name(ahc), cmd->device->channel,
-					cmd->device->id, cmd->device->lun);
+			       cmd->device->id, (u8)cmd->device->lun);
 			retval = SUCCESS;
 			goto done;
 		}
 	} else if (ahc_search_qinfifo(ahc, cmd->device->id,
 				      cmd->device->channel + 'A',
-				      cmd->device->lun, pending_scb->hscb->tag,
+				      cmd->device->lun,
+				      pending_scb->hscb->tag,
 				      ROLE_INITIATOR, /*status*/0,
 				      SEARCH_COUNT) > 0) {
 		disconnected = FALSE;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 383a3d11652d..64eec6c07a83 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -175,7 +175,7 @@ ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
 
 	seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
 		  sdev->sdev_target->channel + 'A',
-		  sdev->sdev_target->id, sdev->lun);
+		   sdev->sdev_target->id, (u8)sdev->lun);
 
 	seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
 	seq_printf(m, "\t\tCommands Active %d\n", dev->active);