[SCSI] tgt: fix sesnse buffer problems

This patch simplify the way to notify LLDs of the command completion
and addresses the following sense buffer problems:

- can't handle both data and sense.
- forces user-space to use aligned sense buffer

tgt copies sense_data from userspace to cmnd->sense_buffer (if
necessary), maps user-space pages (if necessary) and then calls
host->transfer_response (host->transfer_data is removed).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/scsi/scsi_tgt_if.c b/drivers/scsi/scsi_tgt_if.c
index 0e08817fdecf..ca22ddf81746 100644
--- a/drivers/scsi/scsi_tgt_if.c
+++ b/drivers/scsi/scsi_tgt_if.c
@@ -179,10 +179,12 @@ static int event_recv_msg(struct tgt_event *ev)
         switch (ev->hdr.type) {
         case TGT_UEVENT_CMD_RSP:
                 err = scsi_tgt_kspace_exec(ev->p.cmd_rsp.host_no,
-                                           ev->p.cmd_rsp.tag,
                                            ev->p.cmd_rsp.result,
-                                           ev->p.cmd_rsp.len,
+                                           ev->p.cmd_rsp.tag,
                                            ev->p.cmd_rsp.uaddr,
+                                           ev->p.cmd_rsp.len,
+                                           ev->p.cmd_rsp.sense_uaddr,
+                                           ev->p.cmd_rsp.sense_len,
                                            ev->p.cmd_rsp.rw);
                 break;
         case TGT_UEVENT_TSK_MGMT_RSP: