nvme: save hmpre and hmmin in struct nvme_ctrl

We'll need the later for the HMB support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>

drivers/nvme/host/core.c

@@ -1633,6 +1633,8 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
 		}
 	} else {
 		ctrl->cntlid = le16_to_cpu(id->cntlid);
+		ctrl->hmpre = le32_to_cpu(id->hmpre);
+		ctrl->hmmin = le32_to_cpu(id->hmmin);
 	}
 
 	kfree(id);

drivers/nvme/host/nvme.h

@@ -166,6 +166,9 @@ struct nvme_ctrl {
 	/* Power saving configuration */
 	u64 ps_max_latency_us;
 
+	u32 hmpre;
+	u32 hmmin;
+
 	/* Fabrics only */
 	u16 sqsize;
 	u32 ioccsz;