diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 631dca2e4e84..75f189e42f88 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1824,8 +1824,8 @@ static int null_validate_conf(struct nullb_device *dev)
 		dev->queue_mode = NULL_Q_MQ;
 	}
 
-	dev->blocksize = round_down(dev->blocksize, 512);
-	dev->blocksize = clamp_t(unsigned int, dev->blocksize, 512, 4096);
+	if (blk_validate_block_size(dev->blocksize))
+		return -EINVAL;
 
 	if (dev->use_per_node_hctx) {
 		if (dev->submit_queues != nr_online_nodes)
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index c6ad2148c2e0..ceb9c0ed3120 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -180,7 +180,7 @@ int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val)
 	cmd.prop_get.offset = cpu_to_le32(off);
 
 	ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0,
-			NVME_QID_ANY, 0);
+			NVME_QID_ANY, NVME_SUBMIT_RESERVED);
 
 	if (ret >= 0)
 		*val = le64_to_cpu(res.u64);
@@ -226,7 +226,7 @@ int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val)
 	cmd.prop_get.offset = cpu_to_le32(off);
 
 	ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0,
-			NVME_QID_ANY, 0);
+			NVME_QID_ANY, NVME_SUBMIT_RESERVED);
 
 	if (ret >= 0)
 		*val = le64_to_cpu(res.u64);
@@ -271,7 +271,7 @@ int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val)
 	cmd.prop_set.value = cpu_to_le64(val);
 
 	ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, NULL, NULL, 0,
-			NVME_QID_ANY, 0);
+			NVME_QID_ANY, NVME_SUBMIT_RESERVED);
 	if (unlikely(ret))
 		dev_err(ctrl->device,
 			"Property Set error: %d, offset %#x\n",
diff --git a/drivers/nvme/host/pr.c b/drivers/nvme/host/pr.c
index e05571b2a1b0..8fa1ffcdaed4 100644
--- a/drivers/nvme/host/pr.c
+++ b/drivers/nvme/host/pr.c
@@ -77,7 +77,7 @@ static int nvme_sc_to_pr_err(int nvme_sc)
 	if (nvme_is_path_error(nvme_sc))
 		return PR_STS_PATH_FAILED;
 
-	switch (nvme_sc) {
+	switch (nvme_sc & 0x7ff) {
 	case NVME_SC_SUCCESS:
 		return PR_STS_SUCCESS;
 	case NVME_SC_RESERVATION_CONFLICT: