[PATCH v1 5/6] mpi3mr: Enhance handling of devices removed after controller reset

[Ranjan Kumar <ranjan.kumar@broadcom.com>]

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Mark all of the devices that are exposed to the OS prior to a
controller reset and not detected by the controller after the
reset as removed devices and the I/Os to those devices are
unblocked (and returned with DID_NO_CONNECT) prior to
removing the devices one after the other.

Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
---
 drivers/scsi/mpi3mr/mpi3mr_os.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index 080c1a958905..14b289fb4823 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -1041,6 +1041,19 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
 void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
 {
 	struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
+	struct mpi3mr_stgt_priv_data *tgt_priv;
+
+	dprint_reset(mrioc, "refresh target devices: check for removals\n");
+	list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
+	    list) {
+		if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) &&
+		    tgtdev->host_exposed && tgtdev->starget &&
+		    tgtdev->starget->hostdata) {
+			tgt_priv = tgtdev->starget->hostdata;
+			tgt_priv->dev_removed = 1;
+			atomic_set(&tgt_priv->block_io, 0);
+		}
+	}
 
 	list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
 	    list) {
-- 
2.31.1


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