diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 19917253ba7b..053d5b4909cd 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1876,12 +1876,18 @@ static void nvme_configure_pi_elbas(struct nvme_ns_head *head,
 		struct nvme_id_ns *id, struct nvme_id_ns_nvm *nvm)
 {
 	u32 elbaf = le32_to_cpu(nvm->elbaf[nvme_lbaf_index(id->flbas)]);
+	u8 guard_type;
 
 	/* no support for storage tag formats right now */
 	if (nvme_elbaf_sts(elbaf))
 		return;
 
-	head->guard_type = nvme_elbaf_guard_type(elbaf);
+	guard_type = nvme_elbaf_guard_type(elbaf);
+	if ((nvm->pic & NVME_ID_NS_NVM_QPIFS) &&
+	     guard_type == NVME_NVM_NS_QTYPE_GUARD)
+		guard_type = nvme_elbaf_qualified_guard_type(elbaf);
+
+	head->guard_type = guard_type;
 	switch (head->guard_type) {
 	case NVME_NVM_NS_64B_GUARD:
 		head->pi_size = sizeof(struct crc64_pi_tuple);
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 44e342a46f39..f5f545fa0103 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -1403,10 +1403,10 @@ static void __nvmf_concat_opt_tokens(struct seq_file *seq_file)
 		tok = &opt_tokens[idx];
 		if (tok->token == NVMF_OPT_ERR)
 			continue;
-		seq_puts(seq_file, ",");
+		seq_putc(seq_file, ',');
 		seq_puts(seq_file, tok->pattern);
 	}
-	seq_puts(seq_file, "\n");
+	seq_putc(seq_file, '\n');
 }
 
 static int nvmf_dev_show(struct seq_file *seq_file, void *private)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 21f8e1b9801f..6cd9395ba9ec 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -863,7 +863,8 @@ static blk_status_t nvme_prep_rq(struct nvme_dev *dev, struct request *req)
 	nvme_start_request(req);
 	return BLK_STS_OK;
 out_unmap_data:
-	nvme_unmap_data(dev, req);
+	if (blk_rq_nr_phys_segments(req))
+		nvme_unmap_data(dev, req);
 out_free_cmd:
 	nvme_cleanup_cmd(req);
 	return ret;
@@ -1309,7 +1310,7 @@ static void nvme_warn_reset(struct nvme_dev *dev, u32 csts)
 	dev_warn(dev->ctrl.device,
 		 "Does your device have a faulty power saving mode enabled?\n");
 	dev_warn(dev->ctrl.device,
-		 "Try \"nvme_core.default_ps_max_latency_us=0 pcie_aspm=off\" and report a bug\n");
+		 "Try \"nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off\" and report a bug\n");
 }
 
 static enum blk_eh_timer_return nvme_timeout(struct request *req)
@@ -2968,6 +2969,13 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
 			return NVME_QUIRK_FORCE_NO_SIMPLE_SUSPEND;
 	}
 
+	/*
+	 * NVMe SSD drops off the PCIe bus after system idle
+	 * for 10 hours on a Lenovo N60z board.
+	 */
+	if (dmi_match(DMI_BOARD_NAME, "LXKT-ZXEG-N6"))
+		return NVME_QUIRK_NO_APST;
+
 	return 0;
 }
 
diff --git a/drivers/nvme/host/sysfs.c b/drivers/nvme/host/sysfs.c
index 3c55f7edd181..ba05faaac562 100644
--- a/drivers/nvme/host/sysfs.c
+++ b/drivers/nvme/host/sysfs.c
@@ -233,13 +233,12 @@ static ssize_t nuse_show(struct device *dev, struct device_attribute *attr,
 {
 	struct nvme_ns_head *head = dev_to_ns_head(dev);
 	struct gendisk *disk = dev_to_disk(dev);
-	struct block_device *bdev = disk->part0;
 	int ret;
 
-	if (nvme_disk_is_ns_head(bdev->bd_disk))
+	if (nvme_disk_is_ns_head(disk))
 		ret = ns_head_update_nuse(head);
 	else
-		ret = ns_update_nuse(bdev->bd_disk->private_data);
+		ret = ns_update_nuse(disk->private_data);
 	if (ret)
 		return ret;
 
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index c12a329dd463..7b2ae2e43544 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -485,6 +485,9 @@ enum {
 	NVME_ID_NS_NVM_STS_MASK		= 0x7f,
 	NVME_ID_NS_NVM_GUARD_SHIFT	= 7,
 	NVME_ID_NS_NVM_GUARD_MASK	= 0x3,
+	NVME_ID_NS_NVM_QPIF_SHIFT	= 9,
+	NVME_ID_NS_NVM_QPIF_MASK	= 0xf,
+	NVME_ID_NS_NVM_QPIFS		= 1 << 3,
 };
 
 static inline __u8 nvme_elbaf_sts(__u32 elbaf)
@@ -497,6 +500,11 @@ static inline __u8 nvme_elbaf_guard_type(__u32 elbaf)
 	return (elbaf >> NVME_ID_NS_NVM_GUARD_SHIFT) & NVME_ID_NS_NVM_GUARD_MASK;
 }
 
+static inline __u8 nvme_elbaf_qualified_guard_type(__u32 elbaf)
+{
+	return (elbaf >> NVME_ID_NS_NVM_QPIF_SHIFT) & NVME_ID_NS_NVM_QPIF_MASK;
+}
+
 struct nvme_id_ctrl_nvm {
 	__u8	vsl;
 	__u8	wzsl;
@@ -576,6 +584,7 @@ enum {
 	NVME_NVM_NS_16B_GUARD	= 0,
 	NVME_NVM_NS_32B_GUARD	= 1,
 	NVME_NVM_NS_64B_GUARD	= 2,
+	NVME_NVM_NS_QTYPE_GUARD	= 3,
 };
 
 static inline __u8 nvme_lbaf_index(__u8 flbas)