[SCSI] scsi_dh_alua: fix stpg_endio group state reporting

Initialize stpg_endio() 'err' to SCSI_DH_OK and only change it to
SCSI_DH_IO accordingly.  This allows the switching of target group state
to be properly reported when no error has occurred.

Signed-off-by: Joseph Gruher <joseph.r.gruher@intel.com>
Signed-off-by: Ilgu Hong <ilgu.hong@promise.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index ba3c6491929f..9bd2c8a69a41 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -253,13 +253,15 @@ static void stpg_endio(struct request *req, int error)
 {
         struct alua_dh_data *h = req->end_io_data;
         struct scsi_sense_hdr sense_hdr;
-        unsigned err = SCSI_DH_IO;
+        unsigned err = SCSI_DH_OK;
 
         if (error || host_byte(req->errors) != DID_OK ||
-                        msg_byte(req->errors) != COMMAND_COMPLETE)
+                        msg_byte(req->errors) != COMMAND_COMPLETE) {
+                err = SCSI_DH_IO;
                 goto done;
+        }
 
-        if (err == SCSI_DH_IO && h->senselen > 0) {
+        if (h->senselen > 0) {
                 err = scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE,
                                            &sense_hdr);
                 if (!err) {