[PATCH v5 07/13] scsi: scsi_dh_rdac: need to check the result of scsi_execute in send_mode_select

[zhengbin]

Like sd_pr_command, before use sshdr, we need to check the result
of scsi_execute.

Signed-off-by: zhengbin <zhengbi...@huawei.com>
---
 drivers/scsi/device_handler/scsi_dh_rdac.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c 
b/drivers/scsi/device_handler/scsi_dh_rdac.c
index 5efc959..2a43985 100644
--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
+++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
@@ -531,6 +531,7 @@ static void send_mode_select(struct work_struct *work)
        struct scsi_device *sdev = ctlr->ms_sdev;
        struct rdac_dh_data *h = sdev->handler_data;
        int err = SCSI_DH_OK, retry_cnt = RDAC_RETRY_COUNT;
+       int result;
        struct rdac_queue_data *tmp, *qdata;
        LIST_HEAD(list);
        unsigned char cdb[MAX_COMMAND_SIZE];
@@ -555,9 +556,10 @@ static void send_mode_select(struct work_struct *work)
                (char *) h->ctlr->array_name, h->ctlr->index,
                (retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying");

-       if (scsi_execute(sdev, cdb, DMA_TO_DEVICE, &h->ctlr->mode_select,
-                       data_size, NULL, &sshdr, RDAC_TIMEOUT * HZ,
-                       RDAC_RETRIES, req_flags, 0, NULL)) {
+       result = scsi_execute(sdev, cdb, DMA_TO_DEVICE, &h->ctlr->mode_select,
+                            data_size, NULL, &sshdr, RDAC_TIMEOUT * HZ,
+                            RDAC_RETRIES, req_flags, 0, NULL);
+       if (driver_byte(result) == DRIVER_SENSE) {
                err = mode_select_handle_sense(sdev, &sshdr);
                if (err == SCSI_DH_RETRY && retry_cnt--)
                        goto retry;
--
2.7.4