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/ch.c b/drivers/scsi/ch.c
index 2a32374..7e952ca 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -247,7 +247,7 @@
retry:
memset(cmd,0,sizeof(cmd));
cmd[0] = READ_ELEMENT_STATUS;
- cmd[1] = (ch->device->lun << 5) |
+ cmd[1] = ((ch->device->lun & 0x7) << 5) |
(ch->voltags ? 0x10 : 0) |
ch_elem_to_typecode(ch,elem);
cmd[2] = (elem >> 8) & 0xff;
@@ -283,7 +283,7 @@
VPRINTK(KERN_INFO, "INITIALIZE ELEMENT STATUS, may take some time ...\n");
memset(cmd,0,sizeof(cmd));
cmd[0] = INITIALIZE_ELEMENT_STATUS;
- cmd[1] = ch->device->lun << 5;
+ cmd[1] = (ch->device->lun & 0x7) << 5;
err = ch_do_scsi(ch, cmd, NULL, 0, DMA_NONE);
VPRINTK(KERN_INFO, "... finished\n");
return err;
@@ -303,7 +303,7 @@
memset(cmd,0,sizeof(cmd));
cmd[0] = MODE_SENSE;
- cmd[1] = ch->device->lun << 5;
+ cmd[1] = (ch->device->lun & 0x7) << 5;
cmd[2] = 0x1d;
cmd[4] = 255;
result = ch_do_scsi(ch, cmd, buffer, 255, DMA_FROM_DEVICE);
@@ -428,7 +428,7 @@
trans = ch->firsts[CHET_MT];
memset(cmd,0,sizeof(cmd));
cmd[0] = POSITION_TO_ELEMENT;
- cmd[1] = ch->device->lun << 5;
+ cmd[1] = (ch->device->lun & 0x7) << 5;
cmd[2] = (trans >> 8) & 0xff;
cmd[3] = trans & 0xff;
cmd[4] = (elem >> 8) & 0xff;
@@ -447,7 +447,7 @@
trans = ch->firsts[CHET_MT];
memset(cmd,0,sizeof(cmd));
cmd[0] = MOVE_MEDIUM;
- cmd[1] = ch->device->lun << 5;
+ cmd[1] = (ch->device->lun & 0x7) << 5;
cmd[2] = (trans >> 8) & 0xff;
cmd[3] = trans & 0xff;
cmd[4] = (src >> 8) & 0xff;
@@ -470,7 +470,7 @@
trans = ch->firsts[CHET_MT];
memset(cmd,0,sizeof(cmd));
cmd[0] = EXCHANGE_MEDIUM;
- cmd[1] = ch->device->lun << 5;
+ cmd[1] = (ch->device->lun & 0x7) << 5;
cmd[2] = (trans >> 8) & 0xff;
cmd[3] = trans & 0xff;
cmd[4] = (src >> 8) & 0xff;
@@ -518,7 +518,7 @@
elem, tag);
memset(cmd,0,sizeof(cmd));
cmd[0] = SEND_VOLUME_TAG;
- cmd[1] = (ch->device->lun << 5) |
+ cmd[1] = ((ch->device->lun & 0x7) << 5) |
ch_elem_to_typecode(ch,elem);
cmd[2] = (elem >> 8) & 0xff;
cmd[3] = elem & 0xff;
@@ -754,7 +754,7 @@
voltag_retry:
memset(ch_cmd, 0, sizeof(ch_cmd));
ch_cmd[0] = READ_ELEMENT_STATUS;
- ch_cmd[1] = (ch->device->lun << 5) |
+ ch_cmd[1] = ((ch->device->lun & 0x7) << 5) |
(ch->voltags ? 0x10 : 0) |
ch_elem_to_typecode(ch,elem);
ch_cmd[2] = (elem >> 8) & 0xff;