megaraid_sas: make HBA operational after LD_MAP_SYNC DCMD in OCR path

In OCR(Online Controller Reset) path, driver sets adapter state to
MEGASAS_HBA_OPERATIONAL before getting new RAID map.  There will be a small
window where IO will come from OS with old RAID map. This patch will update
adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new RAID
map to avoid any IOs getting build using old RAID map.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 98dfc1d1079b22b7e45ada3a36c5135026538e42..4e259edd467a311e52763e3b7c1bda767dbeaf68 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -2803,11 +2803,6 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
                                }
                        }
 
-                       clear_bit(MEGASAS_FUSION_IN_RESET,
-                                 &instance->reset_flags);
-                       instance->instancet->enable_intr(instance);
-                       instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
-
                        if (megasas_get_ctrl_info(instance)) {
                                dev_info(&instance->pdev->dev,
                                        "Failed from %s %d\n",
@@ -2825,6 +2820,11 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
                        if (!megasas_get_map_info(instance))
                                megasas_sync_map_info(instance);
 
+                       clear_bit(MEGASAS_FUSION_IN_RESET,
+                                 &instance->reset_flags);
+                       instance->instancet->enable_intr(instance);
+                       instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
+
                        /* Restart SR-IOV heartbeat */
                        if (instance->requestorId) {
                                if (!megasas_sriov_start_heartbeat(instance, 0))
@@ -2841,14 +2841,14 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
                               "successful for scsi%d.\n",
                                instance->host->host_no);
 
-                       if (instance->crash_dump_drv_support) {
-                               if (instance->crash_dump_app_support)
-                                       megasas_set_crash_dump_params(instance,
-                                               MR_CRASH_BUF_TURN_ON);
-                               else
-                                       megasas_set_crash_dump_params(instance,
-                                               MR_CRASH_BUF_TURN_OFF);
-                       }
+                       if (instance->crash_dump_drv_support &&
+                               instance->crash_dump_app_support)
+                               megasas_set_crash_dump_params(instance,
+                                       MR_CRASH_BUF_TURN_ON);
+                       else
+                               megasas_set_crash_dump_params(instance,
+                                       MR_CRASH_BUF_TURN_OFF);
+
                        retval = SUCCESS;
                        goto out;
                }