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| author | Hannes Reinecke <hare@suse.de> | 2014-06-25 15:27:36 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-07-17 22:07:37 +0200 |
| commit | 9cb78c16f5dadefd8dc5ba0ae5a2f26cd59419b3 (patch) | |
| tree | 576b86c3ec56dd7176285ec2d27f27ca55f77bc3 /drivers/scsi/ch.c | |
| parent | 755f516bbb983915d6cbfb5aa592cc0a5a99fd00 (diff) | |
| download | linux-stable-9cb78c16f5dadefd8dc5ba0ae5a2f26cd59419b3.tar.gz linux-stable-9cb78c16f5dadefd8dc5ba0ae5a2f26cd59419b3.tar.bz2 linux-stable-9cb78c16f5dadefd8dc5ba0ae5a2f26cd59419b3.zip | |
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>
Diffstat (limited to 'drivers/scsi/ch.c')
| -rw-r--r-- | drivers/scsi/ch.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index 2a323742ce04..7e952cadbcf1 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -247,7 +247,7 @@ ch_read_element_status(scsi_changer *ch, u_int elem, char *data) 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 @@ ch_init_elem(scsi_changer *ch) 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 @@ ch_readconfig(scsi_changer *ch) 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 @@ ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate) 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 @@ ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate) 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 @@ ch_exchange(scsi_changer *ch, u_int trans, u_int src, 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 @@ ch_set_voltag(scsi_changer *ch, u_int elem, 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 @@ static long ch_ioctl(struct file *file, 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; |