diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c
index a9c2de95c5e2..3feaece13ade 100644
--- a/drivers/hid/hid-alps.c
+++ b/drivers/hid/hid-alps.c
@@ -526,7 +526,7 @@ static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
 
 	ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
 			&sen_line_num_y, 0, true);
-		if (ret < 0) {
+	if (ret < 0) {
 		dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
 		goto exit;
 	}
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 6dbd09254c44..56172fe6995c 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -927,7 +927,7 @@ static int hid_scan_report(struct hid_device *hid)
 /**
  * hid_parse_report - parse device report
  *
- * @device: hid device
+ * @hid: hid device
  * @start: report start
  * @size: report size
  *
@@ -952,7 +952,7 @@ static const char * const hid_report_names[] = {
 /**
  * hid_validate_values - validate existing device report's value indexes
  *
- * @device: hid device
+ * @hid: hid device
  * @type: which report type to examine
  * @id: which report ID to examine (0 for first)
  * @field_index: which report field to examine
@@ -1451,7 +1451,7 @@ static int search(__s32 *array, __s32 value, unsigned n)
  * hid_match_report - check if driver's raw_event should be called
  *
  * @hid: hid device
- * @report_type: type to match against
+ * @report: hid report to match against
  *
  * compare hid->driver->report_table->report_type to report->type
  */
@@ -2127,7 +2127,7 @@ struct hid_dynid {
 
 /**
  * store_new_id - add a new HID device ID to this driver and re-probe devices
- * @driver: target device driver
+ * @drv: target device driver
  * @buf: buffer for scanning device ID data
  * @count: input size
  *
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 74fc1df6e3c2..d69842f79fc6 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -727,6 +727,8 @@
 #define USB_DEVICE_ID_LENOVO_TP10UBKBD	0x6062
 #define USB_DEVICE_ID_LENOVO_TPPRODOCK	0x6067
 #define USB_DEVICE_ID_LENOVO_X1_COVER	0x6085
+#define USB_DEVICE_ID_LENOVO_X1_TAB	0x60a3
+#define USB_DEVICE_ID_LENOVO_X1_TAB3	0x60b5
 #define USB_DEVICE_ID_LENOVO_PIXART_USB_MOUSE_608D	0x608d
 #define USB_DEVICE_ID_LENOVO_PIXART_USB_MOUSE_6019	0x6019
 #define USB_DEVICE_ID_LENOVO_PIXART_USB_MOUSE_602E	0x602e
@@ -1123,6 +1125,7 @@
 #define USB_DEVICE_ID_SYNAPTICS_DELL_K12A	0x2819
 #define USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012	0x2968
 #define USB_DEVICE_ID_SYNAPTICS_TP_V103	0x5710
+#define USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003	0x73f5
 #define USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5	0x81a7
 
 #define USB_VENDOR_ID_TEXAS_INSTRUMENTS	0x2047
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 88e19996427e..9770db624bfa 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -797,7 +797,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x3b: /* Battery Strength */
 			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
 			usage->type = EV_PWR;
-			goto ignore;
+			return;
 
 		case 0x3c: /* Invert */
 			map_key_clear(BTN_TOOL_RUBBER);
@@ -1059,7 +1059,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case HID_DC_BATTERYSTRENGTH:
 			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
 			usage->type = EV_PWR;
-			goto ignore;
+			return;
 		}
 		goto unknown;
 
diff --git a/drivers/hid/hid-ite.c b/drivers/hid/hid-ite.c
index 6c55682c5974..044a93f3c117 100644
--- a/drivers/hid/hid-ite.c
+++ b/drivers/hid/hid-ite.c
@@ -44,6 +44,10 @@ static const struct hid_device_id ite_devices[] = {
 	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
 		     USB_VENDOR_ID_SYNAPTICS,
 		     USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012) },
+	/* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
+	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+		     USB_VENDOR_ID_SYNAPTICS,
+		     USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, ite_devices);
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index e3152155c4b8..d670bcd57bde 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1973,6 +1973,18 @@ static const struct hid_device_id mt_devices[] = {
 		HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
 			USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
 
+	/* Lenovo X1 TAB Gen 2 */
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
+			   USB_VENDOR_ID_LENOVO,
+			   USB_DEVICE_ID_LENOVO_X1_TAB) },
+
+	/* Lenovo X1 TAB Gen 3 */
+	{ .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
+		HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
+			   USB_VENDOR_ID_LENOVO,
+			   USB_DEVICE_ID_LENOVO_X1_TAB3) },
+
 	/* MosArt panels */
 	{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 		MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 2ff4c8e366ff..1ca64481145e 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -294,31 +294,40 @@ static ssize_t kone_sysfs_write_settings(struct file *fp, struct kobject *kobj,
 	struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 	int retval = 0, difference, old_profile;
+	struct kone_settings *settings = (struct kone_settings *)buf;
 
 	/* I need to get my data in one piece */
 	if (off != 0 || count != sizeof(struct kone_settings))
 		return -EINVAL;
 
 	mutex_lock(&kone->kone_lock);
-	difference = memcmp(buf, &kone->settings, sizeof(struct kone_settings));
+	difference = memcmp(settings, &kone->settings,
+			    sizeof(struct kone_settings));
 	if (difference) {
-		retval = kone_set_settings(usb_dev,
-				(struct kone_settings const *)buf);
-		if (retval) {
-			mutex_unlock(&kone->kone_lock);
-			return retval;
+		if (settings->startup_profile < 1 ||
+		    settings->startup_profile > 5) {
+			retval = -EINVAL;
+			goto unlock;
 		}
 
+		retval = kone_set_settings(usb_dev, settings);
+		if (retval)
+			goto unlock;
+
 		old_profile = kone->settings.startup_profile;
-		memcpy(&kone->settings, buf, sizeof(struct kone_settings));
+		memcpy(&kone->settings, settings, sizeof(struct kone_settings));
 
 		kone_profile_activated(kone, kone->settings.startup_profile);
 
 		if (kone->settings.startup_profile != old_profile)
 			kone_profile_report(kone, kone->settings.startup_profile);
 	}
+unlock:
 	mutex_unlock(&kone->kone_lock);
 
+	if (retval)
+		return retval;
+
 	return sizeof(struct kone_settings);
 }
 static BIN_ATTR(settings, 0660, kone_sysfs_read_settings,
diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index d053b86d0e2e..ac115cb50b34 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -323,7 +323,7 @@ static int i2c_hid_get_report(struct i2c_client *client, u8 reportType,
  * @reportType: 0x03 for HID_FEATURE_REPORT ; 0x02 for HID_OUTPUT_REPORT
  * @reportID: the report ID
  * @buf: the actual data to transfer, without the report ID
- * @len: size of buf
+ * @data_len: size of buf
  * @use_data: true: use SET_REPORT HID command, false: send plain OUTPUT report
  */
 static int i2c_hid_set_or_send_report(struct i2c_client *client, u8 reportType,
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 83dfec327c42..1bd0eb71559c 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2773,7 +2773,9 @@ static int wacom_wac_collection(struct hid_device *hdev, struct hid_report *repo
 	if (report->type != HID_INPUT_REPORT)
 		return -1;
 
-	if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
+	if (WACOM_PAD_FIELD(field))
+		return 0;
+	else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
 		wacom_wac_pen_report(hdev, report);
 	else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
 		wacom_wac_finger_report(hdev, report);