[SCSI] qla4xxx: Wait for disable_acb before doing set_acb

In function qla4xxx_iface_set_param wait for disable_acb to
complete so that set_acb will not fail.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 064d67282f59..0c9ee9378094 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -935,7 +935,16 @@ qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
                 goto exit_init_fw_cb;
         }
 
-        qla4xxx_disable_acb(ha);
+        rval = qla4xxx_disable_acb(ha);
+        if (rval != QLA_SUCCESS) {
+                ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
+                           __func__);
+                rval = -EIO;
+                goto exit_init_fw_cb;
+        }
+
+        wait_for_completion_timeout(&ha->disable_acb_comp,
+                                    DISABLE_ACB_TOV * HZ);
 
         qla4xxx_initcb_to_acb(init_fw_cb);