isci: fix ssp response iu buffer size in isci_tmf

In isci_task_request_complete() we save the response/sense data from the
command.  Make sure isci_tmf has enough space to hold the full response.

[ it does not look like we actually use this data, and
  response_data_len/sense_data_len should be specifying the byte count,
  in any event do the simple fix first so we don't corrupt memory ]

Reported-by: Adam Gruchala <adam.gruchala@intel.com>
Tested-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h
index c8dd075d2be2..d574a18956d7 100644
--- a/drivers/scsi/isci/task.h
+++ b/drivers/scsi/isci/task.h
@@ -100,7 +100,8 @@ struct isci_tmf {
         union {
                 struct ssp_response_iu resp_iu;
                 struct dev_to_host_fis d2h_fis;
-        }                            resp;
+                u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
+        } resp;
         unsigned char lun[8];
         u16 io_tag;
         struct isci_remote_device *device;