scsi: mpi3mr: Block PEL Enable Command on Controller Reset and Unrecoverable State

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@vger.kernel.org> # v6.1+
Co-developed-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Chandrakanth patil <chandrakanth.patil@broadcom.com>
Link: https://lore.kernel.org/r/20231126053134.10133-4-chandrakanth.patil@broadcom.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpi3mr/mpi3mr_app.c

@@ -223,6 +223,22 @@ static long mpi3mr_bsg_pel_enable(struct mpi3mr_ioc *mrioc,
 		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));