5 files changed, 30 insertions, 6 deletions

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 3d9c6f8efc2a..77e040884769 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -842,7 +842,17 @@ struct hid_report *hid_validate_values(struct hid_device *hid,
          * ->numbered being checked, which may not always be the case when
          * drivers go to access report values.
          */
-        report = hid->report_enum[type].report_id_hash[id];
+        if (id == 0) {
+                /*
+                 * Validating on id 0 means we should examine the first
+                 * report in the list.
+                 */
+                report = list_entry(
+                                hid->report_enum[type].report_list.next,
+                                struct hid_report, list);
+        } else {
+                report = hid->report_enum[type].report_id_hash[id];
+        }
         if (!report) {
                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
                 return NULL;
@@ -1253,7 +1263,8 @@ EXPORT_SYMBOL_GPL(hid_output_report);
 
 static int hid_report_len(struct hid_report *report)
 {
-        return ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
+        /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
+        return ((report->size - 1) >> 3) + 1 + (report->id > 0);
 }
 
 /*
@@ -1266,7 +1277,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
          * of implement() working on 8 byte chunks
          */
 
-        int len = hid_report_len(report);
+        int len = hid_report_len(report) + 7;
 
         return kmalloc(len, flags);
 }
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 194528ffb9ad..6d00bb9366fa 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -301,6 +301,9 @@
 
 #define USB_VENDOR_ID_DREAM_CHEEKY      0x1d34
 
+#define USB_VENDOR_ID_ELITEGROUP        0x03fc
+#define USB_DEVICE_ID_ELITEGROUP_05D8   0x05d8
+
 #define USB_VENDOR_ID_ELO               0x04E7
 #define USB_DEVICE_ID_ELO_TS2515        0x0022
 #define USB_DEVICE_ID_ELO_TS2700        0x0020
@@ -843,6 +846,10 @@
 #define USB_DEVICE_ID_SYNAPTICS_LTS2    0x1d10
 #define USB_DEVICE_ID_SYNAPTICS_HD      0x0ac3
 #define USB_DEVICE_ID_SYNAPTICS_QUAD_HD 0x1ac3
+#define USB_DEVICE_ID_SYNAPTICS_TP_V103 0x5710
+
+#define USB_VENDOR_ID_TEXAS_INSTRUMENTS 0x2047
+#define USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA     0x0855
 
 #define USB_VENDOR_ID_THINGM            0x27b8
 #define USB_DEVICE_ID_BLINK1            0x01ed
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 35278e43c7a4..51e25b9407f2 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1155,6 +1155,11 @@ static const struct hid_device_id mt_devices[] = {
                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 
+        /* Elitegroup panel */
+        { .driver_data = MT_CLS_SERIAL,
+                MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
+                        USB_DEVICE_ID_ELITEGROUP_05D8) },
+
         /* Flatfrog Panels */
         { .driver_data = MT_CLS_FLATFROG,
                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index 39bb6f253e23..a8d5c8faf8cf 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -705,9 +705,6 @@ static const struct hid_device_id sensor_hub_devices[] = {
         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1,
                         USB_DEVICE_ID_INTEL_HID_SENSOR_1),
                         .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
-        { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0,
-                        USB_DEVICE_ID_STM_HID_SENSOR),
-                        .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT,
                         USB_DEVICE_ID_MS_SURFACE_PRO_2),
                         .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
@@ -720,6 +717,9 @@ static const struct hid_device_id sensor_hub_devices[] = {
         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0,
                         USB_DEVICE_ID_STM_HID_SENSOR_1),
                         .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
+        { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS,
+                        USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA),
+                        .driver_data = HID_SENSOR_HUB_ENUM_QUIRK},
         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID,
                      HID_ANY_ID) },
         { }
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index ee0b2a8b3cc3..59badc10a08c 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -120,6 +120,7 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS },
+        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS },
 
         { 0, 0 }
 };