[PATCH 6.6 398/583] scsi: mpi3mr: Block PEL Enable Command on Controller Reset and Unrecoverable State

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chandrakanth patil <chandrakanth.patil@xxxxxxxxxxxx>

commit f8fb3f39148e8010479e4b2003ba4728818ec661 upstream.

If a controller reset is underway or the controller is in an unrecoverable
state, the PEL enable management command will be returned as EAGAIN or
EFAULT.

Cc: <stable@xxxxxxxxxxxxxxx> # v6.1+
Co-developed-by: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
Signed-off-by: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
Signed-off-by: Chandrakanth patil <chandrakanth.patil@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231126053134.10133-4-chandrakanth.patil@xxxxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/scsi/mpi3mr/mpi3mr_app.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -223,6 +223,22 @@ static long mpi3mr_bsg_pel_enable(struct
 		return rval;
 	}
 
+	if (mrioc->unrecoverable) {
+		dprint_bsg_err(mrioc, "%s: unrecoverable controller\n",
+			       __func__);
+		return -EFAULT;
+	}
+
+	if (mrioc->reset_in_progress) {
+		dprint_bsg_err(mrioc, "%s: reset in progress\n", __func__);
+		return -EAGAIN;
+	}
+
+	if (mrioc->stop_bsgs) {
+		dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
+		return -EAGAIN;
+	}
+
 	sg_copy_to_buffer(job->request_payload.sg_list,
 			  job->request_payload.sg_cnt,
 			  &pel_enable, sizeof(pel_enable));






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