From 9cb78c16f5dadefd8dc5ba0ae5a2f26cd59419b3 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Wed, 25 Jun 2014 15:27:36 +0200 Subject: 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 Reviewed-by: Christoph Hellwig Reviewed-by: Ewan Milne Signed-off-by: Christoph Hellwig --- drivers/scsi/ch.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/scsi/ch.c') 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; -- cgit v1.2.3