nvme-core: check ctrl css before setting up zns

Ensure multiple Command Sets are supported before starting to setup a ZNS namespace. Signed-off-by: Chaitanya Kulkarni <[email protected]> [hch: move the check around a bit] Signed-off-by: Christoph Hellwig <[email protected]>
Rust-for-Linux · Mar 11, 2021 · 0ec84df · 0ec84df
1 parent f20ef34
commit 0ec84df
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
@@ -4096,6 +4096,12 @@ static void nvme_validate_or_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 				nsid);
 			break;
 		}
+		if (!nvme_multi_css(ctrl)) {
+			dev_warn(ctrl->device,
+				"command set not reported for nsid: %d\n",
+				ns->head->ns_id);
+			break;
+		}
 		nvme_alloc_ns(ctrl, nsid, &ids);
 		break;
 	default: