scsi: mpi3mr: Scan the devices during resume time

Scan the target devices during system resume time and add or remove the
target device with the SML if the corresponding target device is newly
added or removed respectively.

Link: https://lore.kernel.org/r/20220912135742.11764-8-sreekanth.reddy@broadcom.comSigned-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpi3mr/mpi3mr.h

@@ -132,6 +132,8 @@ extern atomic64_t event_counter;
 
 #define MPI3MR_DEFAULT_CFG_PAGE_SZ		1024 /* in bytes */
 
+#define MPI3MR_RESET_TOPOLOGY_SETTLE_TIME	10
+
 #define MPI3MR_SCMD_TIMEOUT    (60 * HZ)
 #define MPI3MR_EH_SCMD_TIMEOUT (60 * HZ)
 

drivers/scsi/mpi3mr/mpi3mr_fw.c

@@ -4042,10 +4042,8 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
 		goto out_failed;
 	}
 
-	if (!is_resume) {
-		mrioc->device_refresh_on = 1;
-		mpi3mr_add_event_wait_for_device_refresh(mrioc);
-	}
+	mrioc->device_refresh_on = 1;
+	mpi3mr_add_event_wait_for_device_refresh(mrioc);
 
 	ioc_info(mrioc, "sending port enable\n");
 	retval = mpi3mr_issue_port_enable(mrioc, 1);
@@ -4912,7 +4910,7 @@ int mpi3mr_soft_reset_handler(struct mpi3mr_ioc *mrioc,
 		    mrioc->name, reset_reason);
 		goto out;
 	}
-	ssleep(10);
+	ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME);
 
 out:
 	if (!retval) {

drivers/scsi/mpi3mr/mpi3mr_os.c

@@ -5228,13 +5228,17 @@ mpi3mr_resume(struct device *dev)
 	}
 
 	mrioc->stop_drv_processing = 0;
+	mpi3mr_invalidate_devhandles(mrioc);
+	mpi3mr_free_enclosure_list(mrioc);
 	mpi3mr_memset_buffers(mrioc);
 	r = mpi3mr_reinit_ioc(mrioc, 1);
 	if (r) {
 		ioc_err(mrioc, "resuming controller failed[%d]\n", r);
 		return r;
 	}
+	ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME);
 	scsi_unblock_requests(shost);
+	mrioc->device_refresh_on = 0;
 	mpi3mr_start_watchdog(mrioc);
 
 	return 0;