Merge branch 6.18/scsi-fixes into 6.19/scsi-staging

Pull in fixes branch to resolve UFS merge conflict.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

14 files changed, 177 insertions, 94 deletions

diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
index a58370a6a5d3..fba7b2549dde 100644
--- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
@@ -24,6 +24,10 @@ properties:
           - enum:
               - qcom,qcs8300-qmp-ufs-phy
           - const: qcom,sa8775p-qmp-ufs-phy
+      - items:
+          - enum:
+              - qcom,kaanapali-qmp-ufs-phy
+          - const: qcom,sm8750-qmp-ufs-phy
       - enum:
           - qcom,msm8996-qmp-ufs-phy
           - qcom,msm8998-qmp-ufs-phy
diff --git a/Documentation/devicetree/bindings/ufs/qcom,sm8650-ufshc.yaml b/Documentation/devicetree/bindings/ufs/qcom,sm8650-ufshc.yaml
index aaa0bbb5bfe1..cea84ab2204f 100644
--- a/Documentation/devicetree/bindings/ufs/qcom,sm8650-ufshc.yaml
+++ b/Documentation/devicetree/bindings/ufs/qcom,sm8650-ufshc.yaml
@@ -15,6 +15,7 @@ select:
     compatible:
       contains:
         enum:
+          - qcom,kaanapali-ufshc
           - qcom,sm8650-ufshc
           - qcom,sm8750-ufshc
   required:
@@ -24,6 +25,7 @@ properties:
   compatible:
     items:
       - enum:
+          - qcom,kaanapali-ufshc
           - qcom,sm8650-ufshc
           - qcom,sm8750-ufshc
       - const: qcom,ufshc
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index e047747d4ecf..1b3fbd328277 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -626,8 +626,9 @@ int scsi_host_busy(struct Scsi_Host *shost)
 {
 	int cnt = 0;
 
-	blk_mq_tagset_busy_iter(&shost->tag_set,
-				scsi_host_check_in_flight, &cnt);
+	if (shost->tag_set.ops)
+		blk_mq_tagset_busy_iter(&shost->tag_set,
+					scsi_host_check_in_flight, &cnt);
 	return cnt;
 }
 EXPORT_SYMBOL(scsi_host_busy);
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 16d0f02af1e4..31d08c115521 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -503,7 +503,7 @@ static void fc_fcp_recv_data(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
 		host_bcode = FC_ERROR;
 		goto err;
 	}
-	if (offset + len > fsp->data_len) {
+	if (size_add(offset, len) > fsp->data_len) {
 		/* this should never happen */
 		if ((fr_flags(fp) & FCPHF_CRC_UNCHECKED) &&
 		    fc_frame_crc_check(fp))
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index a761c0aa5127..83ff66f954e6 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -4104,7 +4104,7 @@ void qla4xxx_srb_compl(struct kref *ref)
  * The mid-level driver tries to ensure that queuecommand never gets
  * invoked concurrently with itself or the interrupt handler (although
  * the interrupt handler may call this routine as part of request-
- * completion handling).   Unfortunely, it sometimes calls the scheduler
+ * completion handling). Unfortunately, it sometimes calls the scheduler
  * in interrupt context which is a big NO! NO!.
  **/
 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
@@ -4647,7 +4647,7 @@ static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
 			cmd = scsi_host_find_tag(ha->host, index);
 			/*
 			 * We cannot just check if the index is valid,
-			 * becase if we are run from the scsi eh, then
+			 * because if we are run from the scsi eh, then
 			 * the scsi/block layer is going to prevent
 			 * the tag from being released.
 			 */
@@ -4952,7 +4952,7 @@ recover_ha_init_adapter:
 	/* Upon successful firmware/chip reset, re-initialize the adapter */
 	if (status == QLA_SUCCESS) {
 		/* For ISP-4xxx, force function 1 to always initialize
-		 * before function 3 to prevent both funcions from
+		 * before function 3 to prevent both functions from
 		 * stepping on top of the other */
 		if (is_qla40XX(ha) && (ha->mac_index == 3))
 			ssleep(6);
@@ -6914,7 +6914,7 @@ static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
 	struct ddb_entry *ddb_entry = NULL;
 
 	/* Create session object, with INVALID_ENTRY,
-	 * the targer_id would get set when we issue the login
+	 * the target_id would get set when we issue the login
 	 */
 	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
 				       cmds_max, sizeof(struct ddb_entry),
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 87636068cd37..f869108fd969 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -554,9 +554,9 @@ enum scsi_disposition scsi_check_sense(struct scsi_cmnd *scmd)
 		 * happened, even if someone else gets the sense data.
 		 */
 		if (sshdr.asc == 0x28)
-			scmd->device->ua_new_media_ctr++;
+			atomic_inc(&sdev->ua_new_media_ctr);
 		else if (sshdr.asc == 0x29)
-			scmd->device->ua_por_ctr++;
+			atomic_inc(&sdev->ua_por_ctr);
 	}
 
 	if (scsi_sense_is_deferred(&sshdr))
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 567f9cd29102..6e4112143c76 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1406,14 +1406,19 @@ static struct vmbus_channel *get_og_chn(struct storvsc_device *stor_device,
 	}
 
 	/*
-	 * Our channel array is sparsley populated and we
+	 * Our channel array could be sparsley populated and we
 	 * initiated I/O on a processor/hw-q that does not
 	 * currently have a designated channel. Fix this.
 	 * The strategy is simple:
-	 * I. Ensure NUMA locality
-	 * II. Distribute evenly (best effort)
+	 * I. Prefer the channel associated with the current CPU
+	 * II. Ensure NUMA locality
+	 * III. Distribute evenly (best effort)
 	 */
 
+	/* Prefer the channel on the I/O issuing processor/hw-q */
+	if (cpumask_test_cpu(q_num, &stor_device->alloced_cpus))
+		return stor_device->stor_chns[q_num];
+
 	node_mask = cpumask_of_node(cpu_to_node(q_num));
 
 	num_channels = 0;
@@ -1469,59 +1474,48 @@ static int storvsc_do_io(struct hv_device *device,
 	/* See storvsc_change_target_cpu(). */
 	outgoing_channel = READ_ONCE(stor_device->stor_chns[q_num]);
 	if (outgoing_channel != NULL) {
-		if (outgoing_channel->target_cpu == q_num) {
-			/*
-			 * Ideally, we want to pick a different channel if
-			 * available on the same NUMA node.
-			 */
-			node_mask = cpumask_of_node(cpu_to_node(q_num));
-			for_each_cpu_wrap(tgt_cpu,
-				 &stor_device->alloced_cpus, q_num + 1) {
-				if (!cpumask_test_cpu(tgt_cpu, node_mask))
-					continue;
-				if (tgt_cpu == q_num)
-					continue;
-				channel = READ_ONCE(
-					stor_device->stor_chns[tgt_cpu]);
-				if (channel == NULL)
-					continue;
-				if (hv_get_avail_to_write_percent(
-							&channel->outbound)
-						> ring_avail_percent_lowater) {
-					outgoing_channel = channel;
-					goto found_channel;
-				}
-			}
+		if (hv_get_avail_to_write_percent(&outgoing_channel->outbound)
+				> ring_avail_percent_lowater)
+			goto found_channel;
 
-			/*
-			 * All the other channels on the same NUMA node are
-			 * busy. Try to use the channel on the current CPU
-			 */
-			if (hv_get_avail_to_write_percent(
-						&outgoing_channel->outbound)
-					> ring_avail_percent_lowater)
+		/*
+		 * Channel is busy, try to find a channel on the same NUMA node
+		 */
+		node_mask = cpumask_of_node(cpu_to_node(q_num));
+		for_each_cpu_wrap(tgt_cpu, &stor_device->alloced_cpus,
+				  q_num + 1) {
+			if (!cpumask_test_cpu(tgt_cpu, node_mask))
+				continue;
+			channel = READ_ONCE(stor_device->stor_chns[tgt_cpu]);
+			if (!channel)
+				continue;
+			if (hv_get_avail_to_write_percent(&channel->outbound)
+					> ring_avail_percent_lowater) {
+				outgoing_channel = channel;
 				goto found_channel;
+			}
+		}
 
-			/*
-			 * If we reach here, all the channels on the current
-			 * NUMA node are busy. Try to find a channel in
-			 * other NUMA nodes
-			 */
-			for_each_cpu(tgt_cpu, &stor_device->alloced_cpus) {
-				if (cpumask_test_cpu(tgt_cpu, node_mask))
-					continue;
-				channel = READ_ONCE(
-					stor_device->stor_chns[tgt_cpu]);
-				if (channel == NULL)
-					continue;
-				if (hv_get_avail_to_write_percent(
-							&channel->outbound)
-						> ring_avail_percent_lowater) {
-					outgoing_channel = channel;
-					goto found_channel;
-				}
+		/*
+		 * If we reach here, all the channels on the current
+		 * NUMA node are busy. Try to find a channel in
+		 * all NUMA nodes
+		 */
+		for_each_cpu_wrap(tgt_cpu, &stor_device->alloced_cpus,
+				  q_num + 1) {
+			channel = READ_ONCE(stor_device->stor_chns[tgt_cpu]);
+			if (!channel)
+				continue;
+			if (hv_get_avail_to_write_percent(&channel->outbound)
+					> ring_avail_percent_lowater) {
+				outgoing_channel = channel;
+				goto found_channel;
 			}
 		}
+		/*
+		 * If we reach here, all the channels are busy. Use the
+		 * original channel found.
+		 */
 	} else {
 		spin_lock_irqsave(&stor_device->lock, flags);
 		outgoing_channel = stor_device->stor_chns[q_num];
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c
index af9615587bf3..b33f8656edb5 100644
--- a/drivers/ufs/core/ufs-sysfs.c
+++ b/drivers/ufs/core/ufs-sysfs.c
@@ -1950,7 +1950,7 @@ static umode_t ufs_sysfs_hid_is_visible(struct kobject *kobj,
 	return	hba->dev_info.hid_sup ? attr->mode : 0;
 }
 
-const struct attribute_group ufs_sysfs_hid_group = {
+static const struct attribute_group ufs_sysfs_hid_group = {
 	.name = "hid",
 	.attrs = ufs_sysfs_hid,
 	.is_visible = ufs_sysfs_hid_is_visible,
diff --git a/drivers/ufs/core/ufs-sysfs.h b/drivers/ufs/core/ufs-sysfs.h
index 6efb82a082fd..8d94af3b8077 100644
--- a/drivers/ufs/core/ufs-sysfs.h
+++ b/drivers/ufs/core/ufs-sysfs.h
@@ -14,6 +14,5 @@ void ufs_sysfs_remove_nodes(struct device *dev);
 
 extern const struct attribute_group ufs_sysfs_unit_descriptor_group;
 extern const struct attribute_group ufs_sysfs_lun_attributes_group;
-extern const struct attribute_group ufs_sysfs_hid_group;
 
 #endif
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 8d41f17f7796..8f68e305e83c 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -4269,8 +4269,8 @@ int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
 			get, UIC_GET_ATTR_ID(attr_sel),
 			UFS_UIC_COMMAND_RETRIES - retries);
 
-	if (mib_val && !ret)
-		*mib_val = uic_cmd.argument3;
+	if (mib_val)
+		*mib_val = ret == 0 ? uic_cmd.argument3 : 0;
 
 	if (peer && (hba->quirks & UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE)
 	    && pwr_mode_change)
@@ -4986,7 +4986,7 @@ EXPORT_SYMBOL_GPL(ufshcd_hba_enable);
 
 static int ufshcd_disable_tx_lcc(struct ufs_hba *hba, bool peer)
 {
-	int tx_lanes = 0, i, err = 0;
+	int tx_lanes, i, err = 0;
 
 	if (!peer)
 		ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),
@@ -5053,7 +5053,8 @@ static int ufshcd_link_startup(struct ufs_hba *hba)
 	 * If UFS device isn't active then we will have to issue link startup
 	 * 2 times to make sure the device state move to active.
 	 */
-	if (!ufshcd_is_ufs_dev_active(hba))
+	if (!(hba->quirks & UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE) &&
+	    !ufshcd_is_ufs_dev_active(hba))
 		link_startup_again = true;
 
 link_startup:
@@ -5118,12 +5119,8 @@ link_startup:
 	ufshcd_readl(hba, REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER);
 	ret = ufshcd_make_hba_operational(hba);
 out:
-	if (ret) {
+	if (ret)
 		dev_err(hba->dev, "link startup failed %d\n", ret);
-		ufshcd_print_host_state(hba);
-		ufshcd_print_pwr_info(hba);
-		ufshcd_print_evt_hist(hba);
-	}
 	return ret;
 }
 
@@ -6679,6 +6676,20 @@ static void ufshcd_err_handler(struct work_struct *work)
 		 hba->saved_uic_err, hba->force_reset,
 		 ufshcd_is_link_broken(hba) ? "; link is broken" : "");
 
+	/*
+	 * Use ufshcd_rpm_get_noresume() here to safely perform link recovery
+	 * even if an error occurs during runtime suspend or runtime resume.
+	 * This avoids potential deadlocks that could happen if we tried to
+	 * resume the device while a PM operation is already in progress.
+	 */
+	ufshcd_rpm_get_noresume(hba);
+	if (hba->pm_op_in_progress) {
+		ufshcd_link_recovery(hba);
+		ufshcd_rpm_put(hba);
+		return;
+	}
+	ufshcd_rpm_put(hba);
+
 	down(&hba->host_sem);
 	spin_lock_irqsave(hba->host->host_lock, flags);
 	if (ufshcd_err_handling_should_stop(hba)) {
@@ -6690,14 +6701,6 @@ static void ufshcd_err_handler(struct work_struct *work)
 	}
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
-	ufshcd_rpm_get_noresume(hba);
-	if (hba->pm_op_in_progress) {
-		ufshcd_link_recovery(hba);
-		ufshcd_rpm_put(hba);
-		return;
-	}
-	ufshcd_rpm_put(hba);
-
 	ufshcd_err_handling_prepare(hba);
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
@@ -8538,8 +8541,6 @@ static int ufs_get_device_desc(struct ufs_hba *hba)
 				DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP) &
 				UFS_DEV_HID_SUPPORT;
 
-	sysfs_update_group(&hba->dev->kobj, &ufs_sysfs_hid_group);
-
 	model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME];
 
 	err = ufshcd_read_string_desc(hba, model_index,
@@ -10700,7 +10701,7 @@ remove_scsi_host:
  * @mmio_base: base register address
  * @irq: Interrupt line of device
  *
- * Return: 0 on success, non-zero value on failure.
+ * Return: 0 on success; < 0 on failure.
  */
 int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
 {
@@ -10939,8 +10940,8 @@ initialized:
 	if (err)
 		goto out_disable;
 
-	async_schedule(ufshcd_async_scan, hba);
 	ufs_sysfs_add_nodes(hba->dev);
+	async_schedule(ufshcd_async_scan, hba);
 
 	device_enable_async_suspend(dev);
 	ufshcd_pm_qos_init(hba);
@@ -10950,7 +10951,7 @@ out_disable:
 	hba->is_irq_enabled = false;
 	ufshcd_hba_exit(hba);
 out_error:
-	return err;
+	return err > 0 ? -EIO : err;
 }
 EXPORT_SYMBOL_GPL(ufshcd_init);
 
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 038064fb6ec2..8d119b3223cb 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -740,8 +740,21 @@ static int ufs_qcom_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
 
 
 	/* reset the connected UFS device during power down */
-	if (ufs_qcom_is_link_off(hba) && host->device_reset)
+	if (ufs_qcom_is_link_off(hba) && host->device_reset) {
 		ufs_qcom_device_reset_ctrl(hba, true);
+		/*
+		 * After sending the SSU command, asserting the rst_n
+		 * line causes the device firmware to wake up and
+		 * execute its reset routine.
+		 *
+		 * During this process, the device may draw current
+		 * beyond the permissible limit for low-power mode (LPM).
+		 * A 10ms delay, based on experimental observations,
+		 * allows the UFS device to complete its hardware reset
+		 * before transitioning the power rail to LPM.
+		 */
+		usleep_range(10000, 11000);
+	}
 
 	return ufs_qcom_ice_suspend(host);
 }
diff --git a/drivers/ufs/host/ufshcd-pci.c b/drivers/ufs/host/ufshcd-pci.c
index b87e03777395..5f65dfad1a71 100644
--- a/drivers/ufs/host/ufshcd-pci.c
+++ b/drivers/ufs/host/ufshcd-pci.c
@@ -15,6 +15,7 @@
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
 #include <linux/pm_qos.h>
+#include <linux/suspend.h>
 #include <linux/debugfs.h>
 #include <linux/uuid.h>
 #include <linux/acpi.h>
@@ -31,6 +32,7 @@ struct intel_host {
 	u32		dsm_fns;
 	u32		active_ltr;
 	u32		idle_ltr;
+	int		saved_spm_lvl;
 	struct dentry	*debugfs_root;
 	struct gpio_desc *reset_gpio;
 };
@@ -347,6 +349,7 @@ static int ufs_intel_common_init(struct ufs_hba *hba)
 	host = devm_kzalloc(hba->dev, sizeof(*host), GFP_KERNEL);
 	if (!host)
 		return -ENOMEM;
+	host->saved_spm_lvl = -1;
 	ufshcd_set_variant(hba, host);
 	intel_dsm_init(host, hba->dev);
 	if (INTEL_DSM_SUPPORTED(host, RESET)) {
@@ -425,7 +428,8 @@ static int ufs_intel_lkf_init(struct ufs_hba *hba)
 static int ufs_intel_adl_init(struct ufs_hba *hba)
 {
 	hba->nop_out_timeout = 200;
-	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;
+	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 |
+		       UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE;
 	hba->caps |= UFSHCD_CAP_WB_EN;
 	return ufs_intel_common_init(hba);
 }
@@ -538,6 +542,66 @@ static int ufshcd_pci_restore(struct device *dev)
 
 	return ufshcd_system_resume(dev);
 }
+
+static int ufs_intel_suspend_prepare(struct device *dev)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+	struct intel_host *host = ufshcd_get_variant(hba);
+	int err;
+
+	/*
+	 * Only s2idle (S0ix) retains link state.  Force power-off
+	 * (UFS_PM_LVL_5) for any other case.
+	 */
+	if (pm_suspend_target_state != PM_SUSPEND_TO_IDLE && hba->spm_lvl < UFS_PM_LVL_5) {
+		host->saved_spm_lvl = hba->spm_lvl;
+		hba->spm_lvl = UFS_PM_LVL_5;
+	}
+
+	err = ufshcd_suspend_prepare(dev);
+
+	if (err < 0 && host->saved_spm_lvl != -1) {
+		hba->spm_lvl = host->saved_spm_lvl;
+		host->saved_spm_lvl = -1;
+	}
+
+	return err;
+}
+
+static void ufs_intel_resume_complete(struct device *dev)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+	struct intel_host *host = ufshcd_get_variant(hba);
+
+	ufshcd_resume_complete(dev);
+
+	if (host->saved_spm_lvl != -1) {
+		hba->spm_lvl = host->saved_spm_lvl;
+		host->saved_spm_lvl = -1;
+	}
+}
+
+static int ufshcd_pci_suspend_prepare(struct device *dev)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+
+	if (!strcmp(hba->vops->name, "intel-pci"))
+		return ufs_intel_suspend_prepare(dev);
+
+	return ufshcd_suspend_prepare(dev);
+}
+
+static void ufshcd_pci_resume_complete(struct device *dev)
+{
+	struct ufs_hba *hba = dev_get_drvdata(dev);
+
+	if (!strcmp(hba->vops->name, "intel-pci")) {
+		ufs_intel_resume_complete(dev);
+		return;
+	}
+
+	ufshcd_resume_complete(dev);
+}
 #endif
 
 /**
@@ -611,8 +675,8 @@ static const struct dev_pm_ops ufshcd_pci_pm_ops = {
 	.thaw		= ufshcd_system_resume,
 	.poweroff	= ufshcd_system_suspend,
 	.restore	= ufshcd_pci_restore,
-	.prepare	= ufshcd_suspend_prepare,
-	.complete	= ufshcd_resume_complete,
+	.prepare	= ufshcd_pci_suspend_prepare,
+	.complete	= ufshcd_pci_resume_complete,
 #endif
 };
 
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index d62265d12cfe..d32f5841f4f8 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -258,8 +258,8 @@ struct scsi_device {
 	unsigned int queue_stopped;	/* request queue is quiesced */
 	bool offline_already;		/* Device offline message logged */
 
-	unsigned int ua_new_media_ctr;	/* Counter for New Media UNIT ATTENTIONs */
-	unsigned int ua_por_ctr;	/* Counter for Power On / Reset UAs */
+	atomic_t ua_new_media_ctr;	/* Counter for New Media UNIT ATTENTIONs */
+	atomic_t ua_por_ctr;		/* Counter for Power On / Reset UAs */
 
 	atomic_t disk_events_disable_depth; /* disable depth for disk events */
 
@@ -719,10 +719,8 @@ static inline int scsi_device_busy(struct scsi_device *sdev)
 }
 
 /* Macros to access the UNIT ATTENTION counters */
-#define scsi_get_ua_new_media_ctr(sdev) \
-	((const unsigned int)(sdev->ua_new_media_ctr))
-#define scsi_get_ua_por_ctr(sdev) \
-	((const unsigned int)(sdev->ua_por_ctr))
+#define scsi_get_ua_new_media_ctr(sdev)	atomic_read(&sdev->ua_new_media_ctr)
+#define scsi_get_ua_por_ctr(sdev)	atomic_read(&sdev->ua_por_ctr)
 
 #define MODULE_ALIAS_SCSI_DEVICE(type) \
 	MODULE_ALIAS("scsi:t-" __stringify(type) "*")
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index c07ba003a5cb..37b443d48528 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -683,6 +683,13 @@ enum ufshcd_quirks {
 	 * single doorbell mode.
 	 */
 	UFSHCD_QUIRK_BROKEN_LSDBS_CAP			= 1 << 25,
+
+	/*
+	 * This quirk indicates that DME_LINKSTARTUP should not be issued a 2nd
+	 * time (refer link_startup_again) after the 1st time was successful,
+	 * because it causes link startup to become unreliable.
+	 */
+	UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE		= 1 << 26,
 };
 
 enum ufshcd_caps {