[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, 3 insertions, 2 deletions

diff --git a/drivers/scsi/scsi_tgt_priv.h b/drivers/scsi/scsi_tgt_priv.h
index 84488c51ff62..e9e6db1c417f 100644
--- a/drivers/scsi/scsi_tgt_priv.h
+++ b/drivers/scsi/scsi_tgt_priv.h
@@ -18,8 +18,9 @@ extern int scsi_tgt_if_init(void);
 extern int scsi_tgt_uspace_send_cmd(struct scsi_cmnd *cmd, struct scsi_lun *lun,
                                     u64 tag);
 extern int scsi_tgt_uspace_send_status(struct scsi_cmnd *cmd, u64 tag);
-extern int scsi_tgt_kspace_exec(int host_no, u64 tag, int result, u32 len,
-                                unsigned long uaddr, u8 rw);
+extern int scsi_tgt_kspace_exec(int host_no, int result, u64 tag,
+                                unsigned long uaddr, u32 len, unsigned long sense_uaddr,
+                                u32 sense_len, u8 rw);
 extern int scsi_tgt_uspace_send_tsk_mgmt(int host_no, int function, u64 tag,
                                          struct scsi_lun *scsilun, void *data);
 extern int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 mid, int result);