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>
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index e86eb6a..e77b72f 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -321,7 +321,7 @@
 #define CMDINFO(cmd) \
 			(cmd) ? ((cmd)->device->host->host_no) : -1, \
                         (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
-			(cmd) ? ((cmd)->device->lun & 0x07) : -1
+			(cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1
 
 static inline void
 CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
@@ -1602,7 +1602,7 @@
 #if defined(AHA152X_DEBUG)
 			int hostno=DONE_SC->device->host->host_no;
 			int id=DONE_SC->device->id & 0xf;
-			int lun=DONE_SC->device->lun & 0x7;
+			int lun=((u8)DONE_SC->device->lun) & 0x7;
 #endif
 			Scsi_Cmnd *ptr = DONE_SC;
 			DONE_SC=NULL;
@@ -2984,7 +2984,7 @@
 	int i;
 
 	SPRINTF("%p: target=%d; lun=%d; cmnd=( ",
-		ptr, ptr->device->id, ptr->device->lun);
+		ptr, ptr->device->id, (u8)ptr->device->lun);
 
 	for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)
 		SPRINTF("0x%02x ", ptr->cmnd[i]);