[SCSI] libsas: implement > 16 byte CDB support

Remove the arbitrary expectation in libsas that all SCSI commands are 16 bytes
or less.  Instead do all copies via cmd->cmd_len (and use a pointer to this in
the libsas task instead of a copy).  Note that this still doesn't enable > 16
byte CDB support in the underlying drivers because their internal format has
to be fixed and the wire format of > 16 byte CDBs according to the SAS spec is
different.  the libsas drivers (isci, aic94xx, mvsas and pm8xxx are all
updated for this change.

Cc: Lukasz Dorau <lukasz.dorau@intel.com>
Cc: Maciej Patelczyk <maciej.patelczyk@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Jack Wang <xjtuwjp@gmail.com>
Cc: Lindar Liu <lindar_liu@usish.com>
Cc: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 6e795a174a12..da3aee17faa5 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -167,7 +167,7 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd,
         int_to_scsilun(cmd->device->lun, &lun);
         memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8);
         task->ssp_task.task_attr = TASK_ATTR_SIMPLE;
-        memcpy(task->ssp_task.cdb, cmd->cmnd, 16);
+        task->ssp_task.cmd = cmd;
 
         task->scatter = scsi_sglist(cmd);
         task->num_scatter = scsi_sg_count(cmd);