From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Date: Thu, 22 Mar 2012 20:40:08 +0000 (+0100)
Subject: cciss: Initialize scsi host max_sectors for tape drive support
X-Git-Url: http://git.alex.org.uk

cciss: Initialize scsi host max_sectors for tape drive support

BugLink: http://bugs.launchpad.net/bugs/987337

commit 395d287526bb60411ff37b19ad9dd38b58ba8732 upstream.

The default is too small (1024 blocks), use h->cciss_max_sectors (8192 blocks)
Without this change, if you try to set the block size of a tape drive above
512*1024, via "mt -f /dev/st0 setblk nnn" where nnn is greater than 524288,
it won't work right.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---

diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index e820b68..f510a9c 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -866,6 +866,7 @@ cciss_scsi_detect(ctlr_info_t *h)
 	sh->can_queue = cciss_tape_cmds;
 	sh->sg_tablesize = h->maxsgentries;
 	sh->max_cmd_len = MAX_COMMAND_SIZE;
+	sh->max_sectors = h->cciss_max_sectors;
 
 	((struct cciss_scsi_adapter_data_t *) 
 		h->scsi_ctlr)->scsi_host = sh;