[PATCH RFC 2/3] nvme: query independent identify ns by default

[Guixin Liu]

Query independent identify ns by default, if returning fail,
go back to sending the "identify namespace data structure for the
specified NSID or the namespace capabilities for the NVM Command
Set(cns = 0)".

Signed-off-by: Guixin Liu <kanie at linux.alibaba.com>
---
 drivers/nvme/host/core.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index eed41d4d2599..563abc0cb4a1 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4018,7 +4018,7 @@ static void nvme_scan_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 {
 	struct nvme_ns_info info = { .nsid = nsid };
 	struct nvme_ns *ns;
-	int ret;
+	int ret = 1;
 
 	if (nvme_identify_ns_descs(ctrl, &info))
 		return;
@@ -4034,10 +4034,9 @@ static void nvme_scan_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	 * data structure to find all the generic information that is needed to
 	 * set up a namespace.  If not fall back to the legacy version.
 	 */
-	if ((ctrl->cap & NVME_CAP_CRMS_CRIMS) ||
-	    (info.ids.csi != NVME_CSI_NVM && info.ids.csi != NVME_CSI_ZNS))
+	if (nvme_id_cns_ok(ctrl, NVME_ID_CNS_NS_CS_INDEP))
 		ret = nvme_ns_info_from_id_cs_indep(ctrl, &info);
-	else
+	if (ret > 0)
 		ret = nvme_ns_info_from_identify(ctrl, &info);
 
 	if (info.is_removed)
-- 
2.43.0